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Richard is driving home to visit his parents. 135{\rm mi} of the trip are on the interstate highway where the speed limit is 65{\rm mph} . Normally Richard drives at the speed limit, but today he is running late and decides to take his chances by driving at 73{\rm mph}. How many minutes does he save?
A 0.20 kg aluminium plate with an initial temperature of 20 degrees c slides down a 15.00m long surface that is inclined at 30 degrees to the horizontal.
A 1000kg truck is driving up a 10 degree slope. A 10g ornament hangs by a massless string from the rear-view mirror in truck.
A 910-kg sports car collides into the rear end of a 2100-kgSUV stopped at a red light. The bumpers lock, the brakes are locked, What was the speed sports car at impact
The mass of nitrogen molecule, N2, is 4x10^26 kg. What is its root mean square (rms) speed at 40 degrees Celsius
Scientists want to place a 3 × 103 kg satellite in orbit around Mars. They plan to have the satellite orbit a distance equal to 1.8 times the radius of Mars above the surface of the planet, What is the force of attraction between Mars and the satel..
Your spaceship lands on a planet that has a gravitational force whose magnitude is 1/5th of Earth's gravitational force. If you weigh 800 N on Earth
After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 46.0cm, What is the magnitude of the gravitational acceleration on this planet
The velocity of a plane relative to still air is 135 mr/hr. The pilot wants to fly straught north over the ground. What is the direction of the wind relative to the ground
What is size of the gravitational force on the moon
A baggage handler throws a 20kg suitcase along the floor of an airplane luggage compartment with a speed of 1.2 m/s. What is the suitcase's coefficient of kinetic friction on the floor
A burglar alarm is wailing with a frequency of 1200 Hz. What frequency does a cop hear who is driving towards the alarm at a speed of 40.0 m/s
how much kinetic energy does each electron have. Blocks of mass m_1 and m_2 are connected by a massless string that passes over the pulley.
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