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Galileo's great-great-great grandchild stands at the top of a vertical tower 59.0 m tall with a Chianti bottle.
How long does it take for the bottle to fall to the ground, if it was just dropped from the tower?
A light ray is incident from air onto the surface of a very quiet lake. what is the index of refraction of the water
A 1400 kg block is lifted at a constant speed of 4 cm/s by a steel cable that passes over a massless pulley to a motor-driven winch. What force must be exerted by the cable
A 1260 kg car pushes a 2140 kg truck that has a dead battery. When the driver steps on the accelerator, find the magnitude of the force that the car exerts on the truck?
In the fastest measured tennis serve, the ball left the racquet at 73.14 m/s. How far did the ball travel during the serve
What should the charge (sign and magnitude) of a particle of mass 1.44 be for it to remain stationary when placed in a downward-directed electric field of magnitude 630 ? Use 9.81 for the magnitude of the acceleration due to gravity.
An object falls because of gravity at the rate of -920 cm/s2 (- sign is indicative of a downward direction) for 10.00 Seconds. If it starts from rest (vo = 0) and its position starts from do= 0.0, where is it 10.00 Seconds later.
A 1100 kg car increases it speed from 40 km/hr to 60 km/hr in 5 seconds. What is the resultant work done on the car
A vertically hanging steel wire has the following properties. Length=8.75m, Cross-Sectional area= 0.375 cm cubed. Y=2.10x10^11 Pa, B=1.62x10^11 Pa, S= 0.871x10^11 Pa, Proportional Limit=3.27x10^8 Pa, breaking stress=17.4x10^8 Pa.
We have an RC circuit with a 1.0 mega Faraday capacitor, a 20 kilo-ohms resistor, amd a 9.0 volt battery. what is the voltage between the plates of the capacitor
An aluminum cup contains 225 g of water and a 40 g copper stirrer, all at 27°C. A 490 g sample of silver at an initial temperature of 90°C is placed in the water. Calculate the mass of the aluminum cup
A system consisting entirely of electrons and protons has a net charge of 1.64×10?15C, How many electrons and protons are in this system
The car has just achieved double its initial velocity when the driver spots a police officer behind him and applies the brakes. The car then slows down, coming to rest at the stoplight ahead.
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