Questions from College Physics

Q: A 6.0 kg block, starting from rest, slides

A 6.0 kg block, starting from rest, slides down a frictionless incline of length 2.0 m. When it arrives at the bottom of the incline, its speed is vf. At what distance from the top of the incline is t...

Q: A spring gun (k = 28 N/m) is

A spring gun (k = 28 N/m) is used to shoot a 56 g ball horizontally. Initially the spring is compressed by 18 cm. The ball loses contact with the spring and leaves the gun when the spring is still com...

Q: What does it mean if the power factor is 1? What

What does it mean if the power factor is 1? What does it mean if it is zero?

Q: In an adventure movie, a 62.5 kg stunt woman

In an adventure movie, a 62.5 kg stunt woman falls 8.10 m and lands in a huge air bag. Her speed just before she hits the air bag is 10.5 m/s. (a) What is the total work done on the stunt woman durin...

Q: Near Earth's surface the air contains both negative and positive ions due

Near Earth's surface the air contains both negative and positive ions due to radioactivity in the soil and cosmic rays from space. As a simplified model, assume there are 600.0 singly charged positive...

Q: Find the magnetic field at the center of the square.

Find the magnetic field at the center of the square.

Q: What is the speed of the object when it has moved 0

What is the speed of the object when it has moved 0.10 m along the incline?

Q: The electric potential at a distance of 20.0 cm from

The electric potential at a distance of 20.0 cm from a point charge is +1.0 kV (assuming V = 0 at infinity). (a) Is the point charge positive or negative? (b) At what distance is the potential +2.0...

Q: (a) At what temperature (if any) does the

(a) At what temperature (if any) does the numerical value of the temperature in Celsius degrees equal its numerical value in Fahrenheit degrees? (b) At what temperature (if any) does the numerical va...

Q: An airplane lands and starts down the runway at a southwest velocity

An airplane lands and starts down the runway at a southwest velocity of 55 m/s. What constant acceleration allows it to come to a stop in 1.0 km? Sketch a graph of vx(t).