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A 4.0-kg object has a velocity of 4.0 m/s headed east. An explosion causes it to break up into two smaller 2.0-kg objects. If one of the objects has a velocity of 3.0 m/s at an angle of 30° east of north, what is the velocity of the other object after the explosion?
The specific heat of a 100-g block of a substance is to be determined.The block is placed in a 25-g copper calorimeter holding 60 g of water at 20°C. Determine the specific heat of the block
A 110 g copper calorimeter cup contains 190 cm3 of water and 45 g of ice, all in thermal equilibrium. find the mass of water before the hot iron is put into the cup
a satellite that weighs 4900N on the launchpad travels around the earths equator in a circular orbit with a period of 1.667h. determine the altitude of the satellite above the earths surface
A student throws a set of keys vertically upward to his fraternity brother, who is in a window 3.60 m above. With what initial velocity were the keys thrown
A wheel that is rotating at 45 Rad/s is give an angular acceleration of 3 Rad/s (sqrd). Use gravity: 10 m/s, how long is the angular velocity of the wheel
A 3.0 m tall, 64 cm diameter concrete column supports a 205,000 kg load. By how much is the column compressed
The New England Merchants Bank Building in Boston is 152 m high, What is the total distance, side to side, that the top of the building moves during such an oscillation
Three point charges, -6.05 10-9 C, -9.75 10-9 C, and +7.50 10-9 C, are fixed at different positions on a circle. What is the radius of the circle
Find the resulting angular speed of the disk (in rad/s) and describe the direction of rotation.
Sally travels by car from one city to another. She drives for 24 min at 63.0 km/h, 52.0 min at 42.0 km/h, and 18.0 min at 81.0 km/h, and she spends 5 min eating lunch and buying gas.
A wooden block with mass 1.75kg is placed against a compressed spring at the bottom of a slope inclined at an angle of 33.0?, Calculate the amount of potential energy that was initially stored in the spring
For a particular RLC series circuit, the capacitive reactance is 9.75 ?, the inductive reactance is 42.7 ?, What is the maximum voltage across the circuit?
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