Answers
Hello!
Answer:
The answer is D
Wish you luck!
Related Questions
jana is drying her hair using 120 v source of power with a current of 12.5A. How many watts of power is her hair dryer using
Answers
Hi there!
Recall the following equation:
[tex]\large\boxed{P = IV}[/tex]
P = Power (W)
I = Current (A)
V = Voltage (V)
Plug in the given values to solve for power:
[tex]P = 120 * 12.5 = \boxed{1500 W}[/tex]
lf an object's velocity changes from 25 meters per second to 15 meters per second in 2.0 seconds, the magnitude of the object's acceleration is
Answers
Answer:
-5 m/s^2
Explanation:
[tex]acceleration = \frac{change \: in \: velocity}{time} \\ \\ = \frac{15 - 25}{2} \\ \\ = \frac{ - 10}{2} \\ \\ = - 5 \: m {s}^{ - 2} \\ \\ negative \: sign \: represents \: that \: \\ object \: is \: slowing \: down.[/tex]
Explanation:
Acceleration is the change in velocity over time.
a = Δv / Δt
a = (15 m/s − 25 m/s) / 2.0 s
a = -5.0 m/s²
The magnitude of the acceleration is 5.0 m/s².
3. A boy does 15 Joules of work to push a cart covering 2.5 meters. How much force did he use?
Given:
Solve For:
Solution:
Answers
Answer: 6 N
Explanation: W (WORK) = 15 JOULES
S (DISTANCE) = 2.5 m
F (FORCE) = ?
BY USING FORmULA OF WORK DONE
W = F.S
F =W/S
F = 15/2.5
F = 6 N
Which features would the scientists most likely see for samples from multicellular organisms
Answers
Answe
common checks
Explanation:
The best time to get my RESTING HEART RATE is right after I run.
true or false
Answers
Answer:
Your answer is: False
It is called a resting heart rate for a reason : )
Explanation:
Hope this helped : )
Answer: false
Your resting heart beat is when your heart beat is resting or calmed down. After you run, your heart is not so calmed. The answer is false.
An object with a mass of 2kg accelerates 3.5m/s2, what is the amount of force being applied to it?
Answers
Answer:
Force = 7N
Explanation:
Force = Mass x Acceleration = 2 x 3.5 = 7N
A penny falls from a windowsill which is 2.5 m above the sidewalk
Answers
Answer:
The answer is 22.14 meters per second
Explanation:
I gotchu brother
If the speed of a wave is
150m/s and its frequency is
2Hz, what is its wavelenght?
Answers
Answer:
wavelength =75m
using v=fΠ
where Π is wavelength
How does the balls potential energy relate to the amount of work needed to place the ball on the 2 m shelf
Answers
How does changing the horizontal position of the ball affect its potential energy? Horizontal position has no effect on gravitational potential energy. The factors that affect an object's gravitational potential energy are its height relative to some reference point, its mass, and the strength of the gravitational field it is in. because it builds speed due to gravity, while its potential energy begins to decrease, because it is no longer as far from the ground. Just before it hits the ground, the ball has almost no potential energy and a lot of kinetic energy.
What has more potential energy: a boulder on the ground or a feather 10 feet in the air? (Answer: The feather because the boulder is on the ground and has zero potential energy. However, if the boulder was 1 mm off the ground, it would probably have more potential energy.) Other examples of items with gravitational potential energy include:
A raised weight.
Water that is behind a dam.
A car that is parked at the top of a hill.
A snow pack (potential avalanche)
A yoyo before it is released.
River water at the top of a waterfall.
A book on a table before it falls.
A child at the top of a slide. The actual potential energy of an object depends on its position relative to other objects. For example, a brick has more potential energy suspended off of a two-story building than it does resting on the ground. That's because the brick's relative position to the Earth gives it more energy. The amount of gravitational potential energy an object has depends on its height and mass. The heavier the object and the higher it is above the ground, the more gravitational potential energy it holds. Gravitational potential energy increases as weight and height increases. PEgrav = m *• g • h
In the above equation, m represents the mass of the object, h represents the height of the object and g represents the gravitational field strength (9.8 N/kg on Earth) - sometimes referred to as the acceleration of gravity.
Since the force required to lift it is equal to its weight, it follows that the gravitational potential energy is equal to its weight times the height to which it is lifted. PE = kg x 9.8 m/s2 x m = joules. PE = lbs x ft = ft lb.
We place the zero point of gravitational potential energy at a distance r of infinity. This makes all values of the gravitational potential energy negative. It turns out that it makes sense to do this because as the distance r becomes large, the gravitational force tends rapidly towards zero. When a ball is dropped gravity pulls the ball toward the ground, slowing the ball down so that each bounce is shorter and shorter, until eventually the ball stops bouncing. The force of the ball hitting the hard ground puts an equal force back onto the ball, meaning it bounces back up. During a collision, some of the ball's energy is converted into heat. As no energy is added to the ball, the ball bounces back with less kinetic energy and cannot reach quite the same height. ... It reaches way higher than from the height it was released. If you define "bouncing" as leaving the ground for any amount of time, the ball stops bouncing when the elastic energy stored in the compression phase of the bounce is not enough to overcome the weight of the ball. ... Some energy is dissipated in the compression and decompression phases.
gravity increases with height. gravity is significantly less on high mountains or tall buildings and increases as we lose height (which is why falling objects speed up) gravity is caused by the Earth spinning. gravity affects things while they are falling but stops when they reach the ground.
After hundreds of years of observation and experimentation, science has classified energy into two main forms: kinetic energy and potential energy. In addition, potential energy takes several forms of its own. Kinetic energy is defined as the energy of a moving object.
Potential Energy of the ball = Amount of work needed to place the ball on the 2 m shelf = [tex]19.62 \times m = f(mass \; of\; balls )[/tex]
By the definition of work
[tex]Work = F.ds......(1)[/tex]
Let us consider a ball having mass = [tex]m[/tex]
Weight of the ball = [tex]mg[/tex]
Equation (1) defines Work.
If the work is to be done against acceleration due to gravity of earth
then the work needed to keep the ball at height [tex]h[/tex] is given by equation (2)
[tex]Work = mg\times h[/tex]......... (2)
Also the Potential Energy of mass m kept at height h is given by equation (3)
[tex]Potential \; Energy = mgh[/tex]......(3)
given
The height of the shelf = 2 m
So From Equation (1) and (2) we get
[tex]Work = Potetial Energy = 19.62\times m \; Joule[/tex]
So both Work and Potential Energy are equal in this case and function of masses of the balls.
For more information please refer to the link below
https://brainly.com/question/24284560
Students who have no interest or
active role in their learning are
in the classroom.
A. busy
B. passive
C. active
Answers
Answer:
The answer is B. passive
Explanation:
Answer:
passive
Explanation:
i say this because it makes the most sense to me and most of the time in the questions they go for the answer that makes the most sense so my final answer is (B.)
PLEASE HURRY! :) TEN POINTS + BRAINLIEST TO 1ST CORRECT ANSWER!
What occurs when someone places an ice pack on an injured ankle? Conduction causes the ice pack to lose thermal energy. Conduction causes the ankle to gain thermal energy. Cold from the ice pack is transferred to the ankle. Heat from the ankle is transferred to the ice pack.
Answers
Answer:
I think it is C. cold from the ice pack is transferred to the ankle
Explanation:
Hope I helped if I did plz give me brainiest thanks <3
Answer:
Hello
well u have already mentioned the answer in the question itself.....
Conduction causes the ice pack to lose thermal energy. Conduction causes the ankle to gain thermal energy. ... Heat from the ankle is transferred to the ice pack.
is it true or false that Genes contain the DNA that tell each cell in the human body how to operate.
Answers
Explanation:
it's true genes contain the DNA
16. A pug puppy is sitting on a skateboard. The pug has a mass of 2.4 kg, and the skateboard has a mass
of 1.3 kg. Assuming the pug stays on the skateboard, what force would give the pug and skateboard an
acceleration of 3.2 m/s?? You may ignore friction. Be sure to follow significant digit rules.
Answers
Answer:
12 N
Explanation:
Use Newton's second law:
∑F = ma
F = (2.4 kg + 1.3 kg) (3.2 m/s²)
F = 11.84 N
Rounded to two significant figures, the force is 12 N.
Which of the following are correct units for acceleration? Chooses all that are correct.
m/s/s
km/hr/hr
m/s
s
km/hr/s
m
m/hr
Answers
What is the electric potential energy of a charge that experiences a force of 3. 6 × 10–4 N when it is 9. 8 × 10–5 m from the source of the electric field?.
Answers
The electric potential energy of a charge that experiences a force of 3. 6 × 10⁻⁴ N when it is 9. 8 × 10⁺⁵m from the source of the electric field will be 3.528×10⁻⁸ V.
What is electric potential energy?Electric potential energy is the amount of work needed to move a unit charge from a point to a specific point against an electric field.
The given data in the problem is;
F is the electric force= 3. 6 × 10⁻⁴ N
V is the electric potential=?
d is the distance = 9. 8 × 10⁻⁵ m
The electric potential energy is given as the product of the electric force and distance.
V=Fd
V = 3.6×10⁻⁴ ×( 9.8×10⁻⁵)
V = 3.528×10⁻⁸ V.
Hence the electric potential energy of a charge will be 3.528×10⁻⁸ V.
To learn more about electric potential energy refer to the link.
https://brainly.com/question/12707371
A 55.0 kg runner who weighs 539.0 N is accelerating at 3.2 m/s2. After 2
seconds, she reaches a speed of 6.4 m/s. What is her momentum at this
point?
A. 176.0 kg-m/s
B. 8.6 kg-m/s
C. 352.0 kg-m/s
D. 84.0 kg-m/s
Answers
Answer:
C. 352.0 kg-m/s
Explanation: Took the test on APEX
Answer:
The answer is C. 352.0 kg-m/s
help pllzz i dont have much time
Answers
Answer:
C hurry
Explanation:
Hello!
Answer:
The answer is C
Wish you luck!!
PLEAS HELPM ME FASTTT MARKING PERIOD IS ABOUT TO END.
Most areas have two high and two low tides each day, this is called ___________.
Question 2 options:
gravity
semi-diurnal
low tide
Answers
Answer:
the answer is semidiurnal
Answer:
I think it is semi-diurnal :)
Hope this helps!!
Have a great day!!
Please rate and mark brainliest!!
What best describes the pitch that juan hears? the pitch remains constant as the ambulance moves toward and then away from juan. the pitch increases and decreases in a repeated pattern as the ambulance passes juan. the pitch drops to a lower pitch once the ambulance passes by juan. the pitch increases to a higher pitch once the ambulance passes by juan.
Answers
The correct answer is "the pitch drops to a lower pitch once the ambulance passes by Juan".
What is the Doppler effect?When there is relative motion between the source and the listener, the Doppler effect causes the frequency to rise or decrease. The frequency determines the pitch. When the frequency rises, the pitch rises with it.
When the source and the listener get closer to each other, the frequency rises. There is a reduction in frequency as the source and listener move away from each other.
Juan is standing on the street in the provided situation. When an ambulance approaches Juan and then passes by, the pitch dips to a lower level.
Hence "The pitch decreases to a lower pitch once the ambulance passes by Juan," is the right answer.
To learn more about the doppler effect refer to the link;
https://brainly.com/question/1330077
Answer:
Explanation:
c.the pitch drops to a lower pitch once the ambulance passes by Juan
The star Aldebaran is a red giant star in the constellation Taurus, the Bull. Aldebaran is the eye of the bull and is about 65 light years away. What would happen if Aldebaran were to explode tonight
Answers
If Aldebaran were to explode tonight then we will be able to see this explosion on the Earth in approximately 65 years. A light-year is a distance that light travels in one (1) year.
What is a light-year?A light-year can be defined as a unit equal to the distance that light needs to travels in one (1) year on the Earth.
One light-year can be considered as a unit that equates to approx. 9.7 trillion kilometers (km) or 5.9 trillion miles.
In consequence, a light-year is a distance unit instead of a unit of time, and this unit was developed by Otto Ule.
Learn more about the light-year unit here:
https://brainly.com/question/1224192
The force that keeps an object moving in a circle is called.
Answers
A 600 W electric heater is connected to a 120 V source. Calculate its current.
Answers
Question :-
A 600 Watt electric heater is connected to a 120 Volt source . Calculate its Current .Answer :-
Current is 5 Ampere .Explanation :-
As per the provided information in the given question, we have been given that the Power is 600 Watt , Voltage is given as 120 Volt . And, we have been asked to calculate the Current .
Now, for calculating the Current , we will use the Formula :-
[tex] \bigstar \: \: \boxed{ \sf{ \: Current \: \: = \: \: \dfrac{ \: Power \: }{Voltage} \: }} \\ [/tex]
Therefore, by Substituting the given values in the above Formula :-
[tex] \dag \: \: \: \sf {Current \: \: = \: \: \dfrac{\: Power \:}{Voltage}} \\ [/tex]
[tex] \longmapsto \: \: \sf {Current \: \: = \: \: \dfrac {\: 600 \:}{120}}[/tex]
[tex] \longmapsto \: \: \bf {Current \: \: = \: \: 5 \: Ampere} [/tex]
Hence :-
Current = 5 Ampere .[tex] \underline {\rule {89pt}{4pt}} \: \: \underline {\rule {89pt}{4pt}} [/tex]
The lava lamp has a light bulb as a heat source at its base. The lamp contains a colored, waxy fluid that can be observed moving in clumps through a clear liquid. A lava lamp filled with orange blobs lit from below. As the clump of colored fluid at the bottom of the lava lamp reaches the top, which has increased? its density its temperature the kinetic energy of its molecules the space between its molecules.
Answers
As the clump of colored fluid at the bottom of the lava lamp reaches the top, Its temperature increases. Temperature directs to the hotness or coldness of a body.
What is temperature?Temperature directs to the hotness or coldness of a body. In clear terms, it is the method of finding the kinetic energy of particles within an entity. Faster the motion of particles more the temperature.
Temperature is essential in all areas of Science right from Physics to Geology and also it is important in most parts of our everyday life.
The clump of colorful fluid at the bottom of the lava lamp rises to the top because the clump, as the heavier liquid, absorbs heat and expands, becoming less dense and rising.
Due to this the temperature is increasing.Hence As the clump of colored fluid at the bottom of the lava lamp reaches the top, Its temperature increases
To learn more about the temperature refer to the link;
https://brainly.com/question/7510619
Answer:
A density
Explanation:
all the others were wrong smh had to redo quiz after all
A 120V Microwave uses 8A of current. It runs for 15 hours over the course of a month. If electrical energy costs $0. 11/KWh, what does it cost to run the microwave for the month
Answers
Answer:
1 kw-hr = 1000 w * 3600 sec = 3.6E6 Joules
E = P t = 120 J/C * 8 C/sec * 3600 sec /hr * 15 hr = 5.18E7Joules
where E is energy used by microwave
5.18E7 / 3.6E6 * .11 = $1.58 cost to run for 15 hrs
Which element is magnetic?
O calcium
O chromium
O carbon
O cobalt
Answers
Answer: D. Cobalt
Explanation: Cobalt has excellent magnetic properties so it is D. Cobalt.
The element which has magnetic properties from the given list of elements would be cobalt , therefore the correct answer is option C.
What are metalloids?The elements of the periodic tables that behave as metals, as well as the nonmetal in some chemical or physical aspects, are known as metalloids. Some examples of metalloids are Boron , silicon , germanium, arsenic , antimony , tellurium , etc.
As given in the problem we have to find out the element which possesses the magnetic properties from the given list ,
Calcium belongs to group 2 of the periodic table and nonmagnetic element . Similarly , carbon is a nonmagnetic material .
Thus , the element which has magnetic properties from the given list of elements would be cobalt, therefore the correct answer is option C .
Learn more about metalloids from here, refer to the link given below ;
brainly.com/question/2548493
#SPJ6
a. What is the S.l unit of acceleration?
m
m/s o
m/s2
N
Answers
Explanation:
The SI unit of acceleration is the metre per second squared (m s−2); or "metre per second per second", as the velocity in metres per second changes by the acceleration value, every second.
When gas in a container expands to three times its volume at constant temperature, the gas pressure?
A) is one third.
B) is one ninth.
C) triples.
D) remains the same
Answers
Answer:
A) is one third
because according to Boyle's law pressure is inversely proportional to the volume
what do you mean by mechanical advantage is 2.5 of a machine?
Answers
Answer:
If you are using a machine that has a mechanical advantage of 2.5,you will have increased your EFFORT DISTANCE by 2.5 times. This allows you to REDUCE the EFFORT FORCE needed by 2.5 times.
All of the following are types of schizophrenic disorders except __________ schizophrenia. A. Catatonic B. Paranoid C. Differentiated D. Disorganized.
Answers
All of the following are types of schizophrenic disorders except Disorganized.
What is schizophrenia?Schizophrenia is a chronic brain disease that affects fewer than 1% of the population in the United States. Symptoms of schizophrenia include delusions,
Hallucinations, disordered speech, difficulty thinking, and a lack of desire. Most symptoms of schizophrenia can be considerably improved with therapy, and the risk of recurrence can be reduced.
Despite the fact that there is no cure for schizophrenia, research is leading to new and safer therapies.
Experts are also examining genetics, performing behavioral studies, and utilizing modern imaging to examine the structure and function of the brain to figure out what causes the condition.
These methods carry the prospect of developing new and more effective treatments.
All of the following are types of schizophrenic disorders except Disorganized.
Hence all of the following are types of schizophrenic disorders except for Disorganized.
To learn more about schizophrenia refer to the link;
https://brainly.com/question/7398446
Answer:
C.
Explanation:
I got it right
(c) A moving train has a kinetic energy of 8.1 x 10(power of 6)J.
The train makes an emergency stop.
It decelerates to rest in a distance of 270 m.
(i) Calculate the average friction force provided by the brakes.
answer
Answers
the friction force provided by the brakes is 30000 N.
What is friction force?Friction force is the force that opposes the motion between two bodies in contact.
To calculate the average friction force provided by the brakes, we apply the formula below.
Formula:
K.E = F'd............. Equation 1Where:
K.E = Kinetic energy of the trainF' = Friction force provided by the brakesd = distanceMake F' the subject of the equation
F' = K.E/d............ Equation 2From the question,
Given:
K.E = 8.1×10⁶d = 270 mSubstitute these values into equation 2
F' = (8.1 ×10⁶)/270F' = 30000 NHence, the friction force provided by the brakes is 30000 N
Learn more about friction force here: https://brainly.com/question/13680415