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1. Estimate the total gravitation potential energy holding the earth together.
2. Given that the most powerful nuclear bomb tested in the US released about 2 x 107 J of energy, estimate the number of these bombs needed to blow up the earth (i.e. overcome the earth's gravitational potential energy).
an 8-kg mass is observed traveling with a speed .08c.a what is its classical momentum? what is its relativistic
q1. a propeller spins at 1890 revmin.a what is its angular velocity in rads?b what is the angular displacement of
A 920 kilogram sports car collides into the rear end of a 2300 kilogram SUV stopped at a red light. Evaluate the speed of the sports car at impact
A highway curve with a radius of 400 m is banked properly for a car traveling 80 km/h. how much sideways force must the tires exert against the road if the car does not skid
Suppose that the amount of heat removed when 1.6 kg of water freezes at 0.0 oC were removed from ethyl alcohol at its freezing/melting point of -114.4 oC. How many kilograms of ethyl alcohol would freeze
An alpha particle approaches a 197 AU nucleus with a speed of1.5x10^7 m/s. In what direction does the nucleus recoil, and with what speed
a jugglers hands are 80 cm apart and the balls being juggled reach a maximum height of 100 cm above the jugglers
A 2.00kg rock is released from rest at a height of 20.0m. ignore air resistance and determine the kinetic energy, gravitational potential energy
A planet of mass 8 × 10^24 kg is at location ‹ -4 × 10^11, 7 × 10^11, 0 › m. A star of mass 7 × 10^30 kg is at location ‹ 5 × 10^11, -5 × 10^11, 0 › m. What is the force exerted on the planet by star? (It will probably be helpful to draw the diagr..
a man stands on the roof of a 19.0 -tall building and throws a rock with a velocity of magnitude 24.0 at an angle of
a car travels at a constant speed around a circular track whose radius is 2.70 km. the car goes once around the track
A thin uniform rod (length = 2.01 m, mass = 3.11 kg) is pivoted about a horizontal frictionless pin through one of its ends. What is the angular acceleration of the rod at the instant it is released
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