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A spring is compressed by 0.0617 m and is used to launch an object horizontally with a speed of 2.58 m/s. If the object were attached to the spring, at what angular frequency (in rad/s) would it oscillate?
A certain camera lens has a focal length of 147 mm. Its position can be adjusted to produce images, Over what range of object distances is the lens useful
A 76 kg window cleaner uses a 13 kg ladder that is 5.0 m long. He places one end on the ground 3.0 m from a wall, What is the angle of this force on the ladder
The index of refraction of silicate flint glass for red light is 1.620 and for violet light is 1.660. What is the angular separation between the red and violet components of the spectrum that emerges from the glass
A car is traveling 17 m/s when the driver sees a child standing on the road. He takes 0.8 s to react, then steps on the brakes and slows at 7.5 m/s2. How far does the car go before it stops.
Suppose a spaceship runs out of fuel near a star. The crew erects a square, white sail 7.06 km on a side, Find the temperature of the star's surface
Walk 10 miles in the direction 54 degrees east of due north. How far will you be from your starting point
The edge of a cube consist of equal resistors of resistance R, that are joined at the orners, let a battery be connected to two opposite corners of a face of cube. what is the efective resistance.
A single-turn current loop, carrying a current of 4.41 A, is in the shape of a right triangle with sides 42.1, 94.5, and 103 cm. What is the magnitude of the net force on the loop
A certain raft is 2.5 m long, 0.55 m wide, and 14 cm deep. If the raft itself has a mass of 15.6 kg, what is the maximum mass it can support in fresh water
An electron is 0.030 m from a proton and has velocity 10 m/s towards the proton. What is the speed of the electron
q. suppose that you hear a clap of thunder 15.90 s after seeing the associated lightning stroke. the speed of sound
A 50 kg rock climber accidentally falls from the side of a rock and freefalls until she is stopped by her 9 m saftey rope. what was the average force felt by the rock climber
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