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the space shuttle is in a 230 mile high orbit. what are the shuttles orbital period in minutes and its speed
In an experiment of centripetal force you have a rotating mass of 500 grams, which is at 5 cm from the axis of rotation. Calculate the angular velocity of the rotating mass
A boy in a moving bus at +6 m/s observes a car moving at -3 m/s. What is the actual velocity of the car
An object is dropped from the top of a tower at a height of 44.1 m. How much time does the object take to reach the ground
A 25 N force at 60° is required to set a crate into motion on a floor. What is the value of the static friction
A football kicked off at an angle 20° from the ground reaches a maximum height of 4.7 m. What is the initial velocity of the kick
A stone is thrown upward with an initial velocity of 6 m/s. What maximum height will the stone reach
In a friction experiment, your wooden plank is horizontal. When a mass of 100 grams is hanging on the weight hanger of mass 50 grams, what is the coefficient of kinetic friction
A boy on board a cruise ship drops a 30.0 g marble into the ocean. what is the terminal speed of the marble
A uniform rod of length 0.940 m and mass 11.0 kg is balanced on a sharp edge at 0.670 m from the left end. Calculate the torque on the center of mass of the rod alone with respect to the pivot point
An elevator weighing 2500 N ascends at a constant speed of 8.0 m/s. How much power must the motor supply to do this
A boy flies a kite with the string at a 30 degree angle to the horizontal. The tension in the string is 4.5N. How much work does the string do on the boy
The carbon isotope 14-C is used for carbon dating of archeological artifacts. What is the recoil speed of the nucleus
a 71 kg baseball lplayer jumps straight up to catch a line drive. If the 140 g ball is moving horizontally at 28 m/s, what is his speed immediately after stopping the ball
a 1.2-m-long steel rod with a diameter of 0.50 cm hangs vertically from the ceiling. By how much does the rod stretch
a frictionless pulley which can be modeled as a 0.80 solid cylinder with a 0.30 m radius has a rope going over it. What is the angular acceleration of the pulley
Moment of inertia Wheel If you lift the front wheel of a poorly maintained bicycle off the ground and then start it spinning at 0.72rev/s, what is the magnitude of the frictional torque
A bicycle rim has a diameter of 0.65 m and a moment of inertia, What is the mass of the rim
An automobile emits 20 lbs of CO2 per gallon of gasoline burned. how many billions of lbs of CO2 are emitted every year
A Big Mac has 3,100,000 Joules of chemical energy, what is the cost of the electric energy equivalent to the energy in a Big Mac
A plane is pointed in the positive x direction and is flying with an speed of (200, 0, 0) m/s relative to the air. Find the velocity of the plane with respect to the ground
The electric field has a constant value of 3.30 103 V/m and is directed downward. Find the potential at the following points
One particle has a mass of 3.00 10-3 kg and a charge of +8.40 µC. A second particle has a mass of 6.00 10-3 kg and the same charge. Find the initial separation between the particles
a 1200 kg car going 25m/s is brought to stop using its brakes. what is the change in temperature of the brakes and wheels
A spring has a spring constant = 40 N/m. It is compressed by a distance 10 cm. calculate Distance along the track to which the cart travels