Answer:
29.4m/s
Explanation:
Given parameters:
Duration of motion = 3s
Acceleration due to gravity = 9.8m/s²
Unknown:
Instantaneous speed = ?
Solution:
Instantaneous speed is the speed at an instant or a particular time.
Since initial speed = 0 because it was at rest, the best motion equation to solve this problem is given as;
V = U + gt
Where V is the instantaneous speed
U is the initial speed
g is the acceleration due to gravity
t is the time taken
Insert the parameters and solve;
V = 0 + 9.8 x 3 = 29.4m/s
all help is very much appreciated !
Answer:
Direct is the correct answer
6. A child tugs on a rope attached to a 0.62-kg toy with a horizontal force
of 16.3 N. A puppy pulls the toy in the opposite direction with a force 15.8
N.What is the acceleration of the toy? (Hint: Remember direction:
towards child or puppy?)
Answer:
Explanation:
Force Mass * acceleration
F = ma
a = F/m
Sum of force = 16.3N - 15.8N = 0.5N
Mass = 0.62kg
Substitute
a = 0.5/ * 0.62
a = 0.81m/s²
The acceleration of the toy is 0.81m/s²
Which best describes friction? A. a downward pull when objects fall through the air B. a constant force that acts on objects that rub together C. a downward pull on objects that roll on bumpy surfaces D. a constant force that pulls two objects toward each other
PLSSS I NEED HELP 20 POINTS!!!
Answer:
i believe its B
Explanation:
im taking physics and thats the only thing that makes sense to me haha
hope this is right and helps <3
Answer:
It's B: a constant force that acts on objects that rub together
Explanation:
HELP
What’s the input and output force of a stapler
:)
Answer:
The input force is the force that when you push down and the output force is the stable going into the paper.
Explanation:
I really hope this helps ;)
Answer: yes
Explanation:
because so
If you were to push on the wall with a force of 100N, how much force would the wall push back towards you?
Answer:
100n
Explanation:
Answer:
-100N
I hope this helps!
Identify all the forms of energy in the picture below
identify thermal energy, mechanical energy, radiant energy, electrical energy, sound energy, and chemical energy
Answer:
we are going to focus on just a few. • Heat energy ( Thermal). • Mechanical energy. • Light (Radiant) energy. • Electrical energy. • Sound energy. • Chemical energy
What is avarage speed? (AS)
speed?
Answer:
average speed = total distance/total time
If a man walks 600 meters in 300 seconds, what was his speed in meters per second?
Answer:
His speed in meters per second was 2. Or, 2 meters per second.
Explanation:
What is symbiosis
A an interaction between organisms
B a type of reproduction
C and organelle in the cell
D a process by which plants make their own food
Answer:
A an interaction between organisms
Explanation:
Symbiosis is an interaction between two or more organisms. It is a biological interaction which can be mutualism, commensalism or parasitic.
Mutualism is a form of interaction between two organisms where they both derive benefit from one another. Commensalism is an interaction in which one organism derives benefit and the other is neutral. Parasitic is an interaction where an organism derives benefit from the other in which the other is harmed.Symbiosis simply entails the interactions between organisms.
what stresses you think of three things and describe what makes these situations stresssful how do they make you feel
Answer:
a lot stresses me out honestly like school work because we are virtual and it's hard cause you basically teaching yourself, secondly me maintaining to be happy i always put everybody's happiness before mine and it's just a lot for me, and lastly the thing that stresses me the most is me overthinking i ALWAYS overthink situations.
Explanation:
:/
Currently, the world population is about:
A. 7 billion
B. 450 million
C. 1.2 trillion
D. 700 million
Which sample of water has the most thermal energy?
O A. A 0.5 kg sample at 1°C
O B. A 1.5 kg sample at 10°C
O C. A 1 kg sample at 10°C
O D. A1 kg sample at 4°C
Answer:b
Explanation:
If your mass is 63.7 kg, and you are standing 7.5 m away from a boulder with
a mass of 9,750.6 kg, what is the gravitational force between you and the
boulder? Newton's law of gravitation is F gravity
Gm; m2. The gravitational
constant G is 6.67 x 10-11 Nm2/kg?
7.36 × 10⁻⁷ Newton is the gravitational force between you and the boulder.
What is Gravity ?Gravity or gravitational force of the earth is defined as the force on which a planet attracts or pulls another planet towards the center. It is represented by symbol g.
What is Force ?Force is defined as the physical quantity and the vector quantity which acts on an object and causes the object to change its size and shape to stop moving and start moving to decelerate and accelerate. Force has both the directions as well as magnitude. The SI unit of force Newton which is also represented as N, named the scientist Sir Issac Newton.
What is Newton's Law of universal gravitational ?The Newton's Law of universal gravitational is defined as the universal force of attraction acting between the two bodies which is inversely proportional to the square of the distance between them and the directly proportional to the product of their masses.
It is represented as
[tex]F = \frac{G m_1 m_2}{r^2}[/tex]
Where,
F represents the gravitation force between the two bodies
G represents the gravitation constant
m₁ represents the first body mass
m₂ represents the second body mass
r represents the distance between the two bodies.
Here,
G = 6.67 x 10-¹¹ Nm²/kg
m₁ = 63.7 kg
m₂ = 9,750.6 kg
r = 7.5 m
Now by putting in the above formula we get the gravitational force between you and the boulder.
[tex]F = \frac{6.67 \times 10^{-11}\ Nm^2/kg \times 63.7\ kg \times 9,750.6\ kg}{(7.5 m)^2}[/tex]
[tex]F = \frac{4142825.1774 \times 10^{-11}\ Nm^2/kg}{56.25}[/tex]
= 7.37 × 10⁻⁷ N
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Does the moon control the waves in the ocean?
Answer:
no don't think so
Explanation:
JESUS CHRIST controls everything 100IQ
No, the moon does not directly control the waves in the ocean. The primary factors that influence the formation of waves in the ocean are wind and the interaction between wind and the water's surface.
The moon, however, does play a significant role in influencing the tides, which are the periodic rise and fall of the ocean's surface.
The gravitational force exerted by the moon, as well as the sun to a lesser extent, creates tidal bulges on the Earth. As the Earth rotates, these tidal bulges move around the planet, resulting in the daily cycle of high tides and low tides.
The gravitational pull of the moon is stronger on the side of the Earth facing the moon, causing a high tide, while on the opposite side, a high tide also occurs due to the centrifugal force resulting from the Earth's rotation. The areas in between experience low tides.
While tides can affect the height and intensity of ocean waves near the coastlines, the actual formation and behavior of waves are primarily driven by wind patterns, water depth, and other factors such as underwater topography.
Waves are generated when the wind transfers its energy to the water's surface, creating oscillations that propagate as waves. These waves can travel vast distances across the ocean, even in the absence of tidal influences.
In conclusion, while the moon's gravitational pull influences the tides, it does not directly control or generate the waves in the ocean.
Waves are primarily driven by wind and other factors, whereas tides are the result of gravitational forces acting on the Earth's oceans.
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Why red has the weakest energy?
Answer:
because plants or living things cant reflect with a red light
Explanation:
Answer:
Explanation:
Red has the longest wavelength so it has the lowest energy of any color.
PLZ HELP DUE IN 10MIN!!!!!!!!!The temperature of the water vapor (H2O) inside a pressure cooker increased from 295 K to 395 K. As
the sample is heated, the pressure of the water vapor went from 21.0 kPa to _____.
Answer:
p2=28.12KPa
Explanation:
Given data:
Initial temperature = 295 K
Final temperature= 395 K
Initial pressure = 21.0 KPa
Final pressure = ?
Solution:
According to Gay-Lussac Law,
The pressure of given amount of a gas is directly proportional to its temperature at constant volume and number of moles.
Mathematical relationship:
P₁/T₁ = P₂/T₂
Now we will put the values in formula:
21.0 KPa / 295 K = P₂/395 K
P₂ = 21.0 KPa× 395 K / 295 K
P₂ = 8295 KPa. K /295 K
P₂ = 28.12 KPa
can somebody helppp me pls thank you:)))))
HEY HEY HEY HEY
Explanation:
HEY HEY HEY HEY HEY
The force of gravity increases when two objects move closer together.
True or False?
The force of gravity increases when two objects move closer together. This is true statement.
What is force?The definition of force in physics is: The push or pull on a massed object changes its velocity.
An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. The application of force is the location at which force is applied, and the direction in which the force is applied is known as the direction of the force.
A spring balance can be used to calculate the Force. Newton is the SI unit of force.
The force of gravity between two objects is inversely proportional to the square of the distance between them. Hence, the force of gravity increases when two objects move closer together. This is true statement.
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Please help me
If a circuit has a current of 0.25 A and a voltage of 3 V, how much resistance is in the circuit? A 0.083 ohms B 0.75 ohms C 1.5 ohms D 12 ohms
Answer:
The resistance in the circuit is 12 ohm.
(D) is correct option
Explanation:
Given that,
Current = 0.25 A
Voltage = 3 V
We need to calculate the resistance
Using ohm's law
[tex]V=IR[/tex]
[tex]R=\dfrac{V}{I}[/tex]
Where, V = voltage
I = current
R = resistance
Put the value into the formula
[tex]R =\dfrac{3}{0.25}[/tex]
[tex]R=12\ ohm[/tex]
Hence, The resistance in the circuit is 12 ohm.
(D) is correct option
If a sled is being pulling on the ground toward the right with a force of 100 N and friction is acting on it to the left with a force of 85 N, what is the net force
of the sled?
O 15 N to the left
15 N to the right
185 N to the right
185 N to the left
Answer:
15 N to the right.
Explanation:
100 N to the right -->
85 N to the left <--
So therefore in order to find the net force of where the sled is being dragged towards is 100 N - 85 N = 15 N.
So the sled is moving towards the right of 15 N.
11. When gathering glassware and equipment for an experiment, you should
a. Read all directions carefully to know what equipment is necessary
b. Examine all glassware to check for chips or cracks.
C. Clean any glassware that appears dirty
d. All of the above
Answer:
C
Explanation:
Option D is the correct answer.
What are the importance when gathering glassware and equipment for experiment?Usually in the research labs there were some rules and we have follow those for our safety measures. Some importance rules while doing experiments were:
Flammable materials should be used in open.Always must use the experimental equipment given.While gathering we must read all directions carefully to know the necessary of the equipment.Glassware should be checked whether it's broken or not before using the equipment.All the glassware and equipment using for experiment must be clean.Should ask our lead or instructor before and after the experiment.While using a test tube we should be away from other people.We should use tongs before picking up the heating material and heated equipment.For any clarifications and doubts we should always ask and listen to the instructor.Hence, option D is the correct answer.
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Why violet has the strongest energy?
Answer:
Explanation:
Because violet waves have the shortest wavelength of the visible light spectrum, they carry the most energy.
if a car start from rest at an initial velocity and accelerate uniformly from rest at 18 m\s square what will be the actual amount if the car stops at 500.
Answer:
initial velocity is 10.0 m/s and it accelerates at2.00 m ...
Explanation:
A cd player has a current of 0.1 a flowing through it. if the source voltage is 4v, what is the resistance? R=V/I
Given parameters:
Current of CD player = 0.1A
Source Voltage = 4V
Unknown:
Resistance = ?
Solution:
Based on Ohm's law;
V = I R;
V = voltage
I = current
R = resistance
Input the parameters and solve;
4 = 0.1 x R
R = [tex]\frac{4}{0.1}[/tex] = 40ohms
The resistance of the CD player is 40ohms
A ball is dropped off the roof of a tall building. If the ball reaches the ground in 8 seconds, how tall is the building, in meters? Round to the nearest whole number (a=9.8 m/s2)
Let b be the height of the building, and y the height of the ball at time t, given by
y = b - 1/2 gt²
where g = 9.8 m/s² is the magnitude of the acceleration due to gravity.
It takes the ball 8 s to reach the ground, at which point y = 0, so that
0 = b - 1/2 (9.8 m/s²) (8 s)²
b = 1/2 (9.8 m/s²) (8 s)²
b = 313.6 m
V=A shot-putter tosses an 8 kg metal ball across a field. The ball moves from rest to a velocity of 4 m/s in 0.8 seconds. Calculate the force (in Newtons) that was used to move the ball. Don't input the unit.
which model would be classified as a physical model
Answer:
Model will be classified as a physical model since it is demonstrating a model in real life.
Explanation:
Answer:
Marshmallow answer
Explanation:
A box has pushed across the floor for 5.2 M with a 48 N force how much work is done?
What does it mean to say that mass is conserved during a physical change?
This law states that, despite chemical reactions or physical transformations, mass is conserved — that is, it cannot be created or destroyed — within an isolated system. In other words, in a chemical reaction, the mass of the products will always be equal to the mass of the reactants.
Answer:
100% oon test
Explanation:This law states that, despite chemical reactions or physical transformations, mass is conserved — that is, it cannot be created or destroyed — within an isolated system. In other words, in a chemical reaction, the mass of the products will always be equal to the mass of the reactants.
"A car is travelling at 70 m/s. The driver sees a cow in the road and slows down with a constant acceleration for 10 seconds before coming to a stop. What is the car’s displacement by the time is stops." what information do you know?
The question does not ask for anything in particular. I will calculate the acceleration and distance.
Answer:
The acceleration of the car is [tex]-7\ m/s^2[/tex]
The distance traveled before stopping is 350 m
Explanation:
Constant Acceleration Motion
It's a type of motion in which the velocity of an object changes by an equal amount in every equal period of time.
Being a the constant acceleration, vo the initial speed, vf the final speed, and t the time, the following relation applies:
[tex]v_f=v_o+at\qquad [1][/tex]
The distance traveled by the object is given by:
[tex]\displaystyle x=v_o.t+\frac{a.t^2}{2}\qquad [2][/tex]
The car has an initial speed of v0=70 m/s when the driver sees a cow in the road and steps on the brakes with an (assumed) constant acceleration during t=10 seconds before stopping (vf=0).
With the information provided, we can calculate the value of the acceleration and the distance traveled.
Using the equation [1] we can solve for a:
[tex]\displaystyle a=\frac{v_f-v_o}{t}[/tex]
Substituting the numerical values:
[tex]\displaystyle a=\frac{0-70}{10}=-7\ m/s^2[/tex]
The acceleration of the car is [tex]-7\ m/s^2[/tex]
The distance is now calculated by using [2]
[tex]\displaystyle x=70\cdot 10+\frac{(-7)\cdot 10^2}{2}[/tex]
[tex]\displaystyle x=700-\frac{700}{2}=350\ m[/tex]
The distance traveled before stopping is 350 m