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A radio-controlled car increases its kinetic energy from 8 J to 10 J over a distance of 5 m. What was the average net force on the car during this interval?
On a hot summer afternoon, Keith is out fishing in a rowboat when he decides to jump into the water and go for a swim, what is its velocity in the opposite direction after he jumps
Besides the gravitational force, a 3.25-kg object is subjected to one other constant force. The object starts from rest and in 1.20 s experiences a displacement of (4.10 - 3.30) m, where the direction of is the upward vertical direction. find out ..
A motorcycle has a constant speed of 20.9 m/s as it passes over the top of a hill whose radius of curvature is 125 m. Find the magnitude of the centripetal force
A person takes a trip, driving with a constant speed 90 km/h except for a 15 minute rest stop. If the person's average speed is 45 km/h, how far does the person travel
a 0.25 harmonic oscillator has a total oscillation energy of 9.9 j. if the oscillation amplitude is 20.0 cm what is the
You toss a ball straight up in the air. Immediately after you let go of it, what forces are acting on the ball
A block with mass m = 4.6 kg is attached to two springs with spring constants kleft = 37 N/m and kright = 51 N/m. What is the effective spring constant of the two springs
A 2530 {\rm kg} satellite used in a cellular telephone network is in a circular orbit at a height of 710 {\rm km} above the surface of the earth. What is the gravitational force on the satellite
A steel ball is dropped onto a hard floor from a height of 1.55 m and rebounds to a height of 1.45 m. (Assume that the positive direction is upward.) Calculate its velocity just before it strikes the floor
Suppose the amount of heat added to the ice block is doubled. By what factor must the mass of the ice be increased if the system is to have the same final temperature
NASA sends satellites to Mars by placing the satellite in a Keplerian orbit (around the sun) such that the perihelion is at the radius of the Earth's orbit, Calculate the time it takes the satellite to travel from Earth to Mars
if you decrease the hanging mass by a factor of four( 0.55 kg/4) but keep the linear mass density the same, by what factor does the fundamental frequency change
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