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You're riding on a cart, carrying a box, moving at an initial speed of vi. You throw the box off the cart such that it lands at rest (zero velocity with respect to the ground so that the ground doesn't have to exert a horizontal force to stop the box). If the box has 1/2 the mass of you and the cart, what will be the final speed of the cart (with you still on it)?
A man driving a car toward a large vertical wall sounds his horn. The car is traveling at 81 km/h. What is the frequency of the car's horn
A bat moving with a speed of 3.15{\rm m/s} and emitting sound of 39.0{\rm kHz}, What frequency is heard by the moth
A person's center of mass is easily found by having the person lie on a reaction board. find the distance from the woman's feet to her center of mass
A freezer has a coefficient of performance of 2.40. The freezer is to convert 1.98kg of water at 26.0 oC to 1.98kg of ice at -5.00 oC in 1 hour. How much electrical energy is consumed by the freezer during this hour
A man on a railroad platform attempts to measure the length of a train car by walking the length of the train and keeping the length of his stride a constant 82 cm per step. Determine the length of the train car
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. How many electrons are there in 4.95 liters of water
Consider a dry air parcel initially at the surface (T=25 degrees celsius and p=980mb) that rises adiabatically to a final location at 900mb
A loudspeaker of mass 21.0 {rm kg} is suspended a distance of h = 2.40 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has the length of l = 3.90 {rm m}.
It is believed that the universe began with a big bang about 17 billion years ago. If the speed of light is 2.99792 × 10^8, what is the maximum possible radius of the observable universe
A tuning fork is set into vibration above a vertical open tube filled with water, What is the frequency of the tuning fork
Calculate the speed of the second ship with respect to Earth if it is fired in the same direction the first spaceship is already moving
The outside mirror on the passenger side of a car is convex and has a focal length of -5.7 m. compute the magnification of the mirror
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