Answer:
No.
Explanation:
Because the acceleration of falling objects is constant and is not affected by mass
Answer: no
The acceleration of an object is equivalent to the gravitational acceleration. The size, shape, and weight of an item are not a cause in the motion of the object. So all objects, regardless of its mass, size, or shape fall freely with the same acceleration.
What phase of the moon would this be?
1st quarter, waxing half moon
3rd quarter, waning half moon
waxing gibbous
waning gibbous
Answer:
First Quarter
Explanation:
Sarah launches her purse straight up in air with a velocity of 30.2m/s
How high will it go?
Answer: 46.53
Explanation:
I need help with all these. Number them pleaseee
You want to figure out which brand of microwave popcorn pops the most kernels so you can get the most value for your money. You test different brands of popcorn to see which bag pops the most popcorn kernels. What is the dependent variable?
A. Number of kernels popped
B. The brand of microwave
C. The brand of popcorn
D. The type of popcorn
Answer:
A
Explanation:
I think the number of kernels popped is depended on the brand of the microwave or it can be the brand of popcorn but the independent variable is the cause and the dependent variable is the effect
The dependent variable is the Number of kernels popped option (A) Number of kernels popped is correct.
What is dependent variable?In mathematical modeling, statistical modeling, and experimental sciences, there are dependent and independent variables.
Dependent variables get their name because, during an experiment, their values are investigated under the presumption or requirement that they are dependent on the values of other variables according to some law or rule.
The brand of microwave or popcorn brand may affect how many kernels pop, but the independent variable is the cause and the dependent variable is the outcome.
Thus, the dependent variable is the Number of kernels popped option (A) Number of kernels popped is correct.
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The worker’s pull on the handle of the cart can best be described as a force having
Group of answer choices
magnitude, only
neither magnitude nor direction
direction, only
both magnitude and direction
Answer:
both magnitude and direction
Explanation:
The worker's pull on the handle of the cart is best described as the force having both magnitude and direction.
This is a vector quantityThe force is channeled to move the cart in a specific direction. Also, the pull on the cart can be quantified, and so it have magnitude. Most physical properties either have magnitude or direction or both.In this case, the worker is pulling the cart towards a specified direction.
Therefore, the fitting choice is both magnitude and direction.
Base your answer to this question on the information below and on your knowledge of physics.
A wave traveling through a uniform medium has an amplitude of 0.20 meter, a wavelength of 0.40 meter, and a frequency of 10 hertz.
Determine the period of this wave.
What’s the period of this wave ?
Answer:
T=1/f
= 1/10
= 0.1 s
v = wavelength × frequency
= 0.40m × 10 Hz
= 4ms^-1
T = wavelength / velocity
= 0.04m / 4 ms^-1
= 0.1 m
Explanation:
so first i used the formula T=1/f and i found that the period, T is 0.1s
and secondly , to check whether i got the correct answer , i used a different formula
i used the formula T = wavelength / velocity
but there's an unknown in it , that's the velocity
so to find the velocity , i used the formula v = wavelength × frequency
when i've done the calculation , the second value of T is same as the first value of T
so , the value of the period, T is 0.1s
Lila is a track and field athlete. She must complete four laps around a circular track. The track itself is a 400 meter track and it took her 6 minutes total to complete. Which best describes her speed and velocity? A. Her speed is 4.4 m/s, and her velocity is 0 m/s B. Her speed is 1.1 m/s, and her velocity is 0 m/s C.Her speed is 0 m/s, and her velocity is 2400 m/s D. Her speed is 4.4 m/s, and her velocity is 4.4 m/s
Answer:
Her speed is 1.1 m/s, and her velocity is 0 m/s
Explanation:
Speed = Distance covered/Time
Given
Distance = 400m
Time = 6minutes = 6*60 = 360 secs
Substitute the given parameter into the formula;
Speed = 400/360
Speed = 1.1m/s
Since the track is a circular track, the displacement will be zero. She is only moving in a circular path (no direction)
Velocity = Displacement/Time
Velocity = 0/3600
Velocity = 0m/s
Hence her speed is 1.1 m/s, and her velocity is 0 m/s
Answer: Her speed is 1.1 m/s, and her velocity is 0 m/s
Explanation:
3. Tyrone wants to determine how fast a bowling ball travels when it is bowled. He uses a stopwatch to
record, in seconds, the time it takes for the bowling ball to reach the pins. Which unit would be most
appropriate to measure the length of the bowling lane?
A. meters
B. kilometers
C. millimeters
D. centimeters
We are constantly surrounded by many types of energy transfers and transformations, showing that energy in a system is conserved. Which of these statements are true about how energy is conserved through transfers and transformations? Choose the two that apply. A. Energy is conserved when a lamp is turned on because some of the electrical energy is transferred into thermal energy. B. Energy is conserved when thermal energy is transferred from your body to a coat. C. Energy is conserved when some of the chemical energy from burning a candle is transformed into thermal energy, while the rest of the chemical energy is transformed into light energy. D. Energy is conserved when electrical energy from a hair dryer is transferred into thermal energy and then transformed by conduction.
Answer:
Energy is conserved when some of the chemical energy from burning a candle is transformed into thermal energy, while the rest of the chemical energy is transformed into light energy.
Energy is conserved when thermal energy is transferred from your body to a coat.
Explanation:
The principle of conservation of energy states that energy can neither be created nor destroyed, but can be transformed from one form to another. This can be regarded as the first law of thermodynamics.
In the answer, we see two major kinds of energy transformation around us. The both cases show the conservation of energy in a system.
How do liquids and gases transfer heat?
A.by radiation
B.by conduction
C.by air movement
D.by convection
Answer:
D.by convection
Explanation:
Liquids and gases primarily transfer heat through convection. The correct answer is option (D). which is convection.
Convection is the process of heat transfer through the movement of a fluid (liquid or gas). When a fluid is heated, its molecules become energized and move more rapidly, causing the fluid to expand and become less dense. The less dense, warmer fluid then rises while the cooler, denser fluid sinks.
In the case of liquids, this movement is often referred to as natural convection. In gases, convection can occur in two ways: natural convection and forced convection.
Natural convection occurs when the heated gas rises due to its decreased density, while the cooler gas descends. Forced convection involves the use of external forces, such as fans or pumps, to create airflow and enhance heat transfer.
Therefore, Liquids and gases primarily transfer heat through convection. The correct answer is option (D). which is convection.
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At speed, the car accelerated at 1.5 acceleration for 6 seconds. What way did the car go during acceleration?
Answer:
The car would be going forward
Explanation:
Acceleration means there is an increase in the rate or speed of something. And this case it is a vehicle.
describe liquids and GASSES IN TERMS OF THERE VOLUME AND SHAPES
Answer:
Explanation:
liquids have definite volume
liquids do not have definite shape. The take the shape of the container in which they are kept.
gases do not have definite volume.
gases do not have definite shape. They take the shape of the container in which they are kept.
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Explanation:
Liquids- Have definite volume
No definite shape(takes the shape of the container)
Gases- No definite volume
No definite shape(takes the shape of the container)
What is the speed of a 55.0 kg skydiver who has 7.81 x 104 J of kinetic energy?
Answer:
v=53.3m/s
Explanation:
Ek=1/2mv²
7.81×10⁴=1/2×55.0v²
v= the square root of 7.81×10⁴/0.5×55.0
v=53.3m/s
The speed of a 55.0 kg skydiver who has 7.81 x 104 J of kinetic energy is 53.29 m/s.
To find the speed, the given values are,
Mass m = 55 Kg
Kinetic Energy = 7.81x 10⁴ J
What is Speed?Speed is the rate of change of distance with time. It is a scalar quantity with magnitude both no direction.
Speed = Distance / Time m/s.
The unit is m/s or km/hr or mile/hr.
Distance covered is simply the length of the path traveled. The unit is m or km or miles.Time taken is the duration of an event. The unit is seconds or minutes or hour.Formula,
Kinetic energy = Ke = 1/2 mv²
When we solve for v,
v² = 2Ke/m
Substituting the given values,
v² = 2(7.81 x 10⁴) / 55
Simplifying,
v² = 15.62 x 10⁴ / 55
v² = 0.284 x 10⁴
v = 0.53291 x 10⁴
v = 53.29 m/s.
The speed of a 55.0 kg skydiver who has 7.81 x 104 J of kinetic energy is 53.29 m/s.
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A car in front of the school goes from rest to 27 m/s in 3.0 seconds. What is its acceleration (assuming it is constant)?
Answer:
81 miles per hour
Explanation:
To get the answer, you should multiply 27 by 3, you should multiply distance by time to get the speed.
Answer:
9 m/s²
Explanation:
´Acceleration (a) is the change in velocity (Δv) over the change in time (Δt), represented by the equation a = Δv/Δt. This allows you to measure how fast velocity changes in meters per second squared (m/s^2). Acceleration is also a vector quantity, so it includes both magnitude and direction.´
Energy that Is transferred from a warmer object to a cooler object is called what?
Answer:
The movement of heat from a warmer object to a cooler one is called heat transfer.
!!PLS HELP ITS URGENT!!Lena is using water displacement to find the volume. The volume of water in a graduated cylinder is 30 ml. After Lena drops a small toy in the graduated cylinder, the volume of water rises to 37 ml. What is the volume of the small toy?
Answer:
7
Explanation:
Hurricanes hit
regions more frequently because of the close proximity to large bodies of water.
Coastal
Mountainious
Midwestern
Why can we have faith in our scientific understandings? Why or why not?
How far will you travel if you run for 30 seconds at 6m/sec?
WHICH TYPES OF ENERGY IS HAPPENING
Answer:
kinetic energy turned potential energy
Explanation:
it moves up the hill and stops so the movement is kinetic energy and the stop is potential energy
Imagine you are on an airplane. Your plane has flown from 30 degrees North to 42 degrees North. How far have you flown?
A ball is thrown horizontally from a height of 1 m and lands 5 m away. What is the time of flight of the ball?
Answer:
The time of flight of the ball is approximately 0.4515 s
Explanation:
The given information are;
The vertical height, s = 1 m
The horizontal distance travelled, x = 5 m
The direction of the initial velocity = Horizontal
Given that the vertical height is known and the ball is in free fall, the time of flight, t, will depend on the vertical motion of the ball
The equation of motion of the ball can be presented as follows;
s = u·t + 1/2·g·t²
The initial vertical velocity = 0
∴ 1 = 1/2 × 9.81 × t²
t² = 1/(1/2 × 9.81 ) ≈ 0.20387 s²
t = √0.20387 = 0.4515 s
The time of flight of the ball ≈ 0.4515 s.
What is TRUE about a capitalist society?
The idea behind capitalism is that the free market of products and ideas is owned and driven by private citizens. A capitalist society is a social order in which private property rights and the free market serve as the basis of trade, distribution of goods, and development.
Answer:
In ideal terms: In a capitalist economic system, the owner of production is the individual, and the benefactors of production are first the individual and second the society. In a socialist or communist economic system, the owner of production is the state or the society, and the benefactor is the society.
WHICH TYPES OF ENERGY ARE HAPPENING
Answer:
mecanichal energy
Explanation:
................
A truck is moving at a constant speed of 50 m/s. A boy riding in the back of the truck throws a newspaper out the back of the truck at a speed of 20 m/s. What is the speed of the paper relative to someone standing on the roadside?
Answer:
70m/s
Explanation:
a car drives 16 m east, then 25 m south, then 16 m west. calculate the distance travelled by car
Answer:
16m + 25m + 16m = 57m
the car travelled 57 m
Which of the following correctly lists the energy conversions that happen when you plug a fan into an electrical outlet and turn it on?
A: chemical, nuclear, potential
B: sound,thermal, kinetic
C:sound,nuclear,electrical
D:chemical,sound,fission
Sally accelerates a 250 kg cart at 3 m/s/s. What must be
the net force?
What is this question asking you to find?
Give one specific example of matter changing one state to another
Answer:
water can change to a solid even though its a liquid
Explanation:when water freezes it turns into a solid
The ice cube floating in my sody is getting smaller and smaller.
There was a puddle of rain water on the ground by the side door this morning, but there's no puddle there now.
A bird can fly 25 km/hr. How long does it take to fly 10 km?
Answer:
25 minutes
Explanation: