05/29/21

i badly need some help for Kinetic Energy solution

A bicycle has a kinetic energy of 131 J. What kinetic energy would the bicycle have if it had …a. … twice the mass and was moving at the same speed? b. … the same mass and was... more

05/06/21

Mechanical Energy: Kinetic Energy (EPE)

A spring with a spring constant of 700N/m stretches by 0.12m. What is the potential energy of the spring? 

04/22/21

What is the electric potential at a point 20 cm away from a 8.0 × 10^-9 C positive point charge? (

What is the electric potential at a point 20 cm away from a 8.0 × 10^-9 C positive point charge? (

02/12/21

How do you find Work using only force?

Currently, in high school Physics, been working on this one for about an hour now:"A football player pushes a tackling dummy (mass = 70 kg) for 72 seconds. If he pushes with aforce of 82 N, what is... more

12/22/20

Help please?!!?

A car is traveling around a circular racing course. The car travels from rest and gradually climbs to a max velocity of 140 m/s. Given the radius of the track is 100 meters and the car goes around... more

12/17/20

Don tKnow how to do this one

A 15.0 m long plane is inclined at 30.0 degrees. If the coefficient of friction is 0.43, what Fapp is required to move a 40.0 kg mass from rest at the bottom on the plane to the top of the plane... more

12/06/20

If the acceleration due to gravity on planet A is 14.6 m/s2 then what is the acceleration due to gravity on planet B?

Planet A has mass M kilograms and radius r meters. Planet B has mass 3.00 M kilograms and radius 1/2.00 r meters. (the answer is 175 m/s^2 but i dont know how to get it)

11/15/20

What is the gauge pressure at this depth?

The depth of the Pacific Ocean in the Mariana Trench is 36,198 ft. What is the gauge pressure at this depth?

11/09/20

physics work force

You pick up a 3.6-kg can of paint from the ground and lift it at constant speed to a height of 2.1 m. a) How much work do you do on the can of paint? b) You hold the can stationary for half a... more

10/28/20

An unknown gas has a density of 0.126 kg/m3, and air has a density of 1.275 kg/m3. If a balloon is filled with 0.476 m3 of helium, what is the maximum mass the balloon can have and still float?

I am having trouble understanding the proper questions and Formulas to use in this question. Any help would be great

07/20/20

refraction of light

Light travels from a region of fused quartz into a region of ethyl alcohol, making an angle of incidence of 70 degrees. Which of the following best describes the path of the light as it moves into... more

06/20/20

please help me with this

bus starts from rest at point A (figure 1) and accelerates at the rate of 0.8m/s2 until it reaches a speed of 12 m/s. It then proceeds at 12m/s until thebrakes are applied; it comes to rest at... more

06/14/20

choose the correct answer

Two similar blocks L and M are put on a table. The minimal forces to move the two objects with a constant velocity are FL (wide horizontal block) and FM (tall vertical block) choose the correct... more

06/08/20

question is under

How many times stronger than the 70 dB sound of a person talking loudly is the 100 dB sound of a power lawn mower? The 100 dB sound of a power lawn mower is times stronger than the 70 dB sound... more

FORCE TABLE EXPERIMENT, PHYSICS LABORATORY

Force Table Experiment:Four forces are applied on the force table by hanging masses over pulleys positioned at certaindirections as given in the table below.a) Find the magnitude and direction of... more

05/13/20

A woman has been prescribed lenses that have a +3.2-diopter refractive power. The glasses are worn 2.0 cm from her eyes.

A woman has been prescribed lenses that have a +3.2-diopter refractive power. The glasses are worn 2.0 cm from her eyes. With the lenses, she can read a magazine held 25 cm from her eyes. Which one... more

05/04/20

Gravitational Forces Question

Two spherical balls are placed so their centers are 255 cm apart. The force between the two balls is... 2.80 x 10-12 N. What is the mass of each ball if one ball is 3.00 kg more than the mass of... more

05/01/20

. Does distilled water conduct electricity? Explain

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