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Question1
The driver of an 1800{rm kg} car travelling on a horizontal road at 114{rm km}/ {rm h} suddenly applies the brakes. Because of a slippery pavement, the friction of the road on the tires of the car, which is what slows down car, is 23.0 percent of the weight of the car. What is acceleration of the car? How various meters does it travel before stopping under these conditions?
Question2
A car travels due east with a speed of 49.0 km/h. Raindrops are falling at a constant speed vertically with respect to Earth. The traces of the rain on the side windows of a car make an angle of 53.0° with vertical. Find out the velocity of the rain with respect to the reference frames.
A Carnot-efficiency engine operating between a reservoir of liquid mercury at its melting point and a colder reservoir extracts 15.0 J of heat from the mercury and does 4.0 J of work during each cycle. What is the temperature of the colder reservo..
Two charged plates create a potential difference of 190 V. At a point halfway between the plates an electron is released from rest. What was the initial speed and direction of the proton
An athlete at the gym holds a 1.2 kg steel ball in his hand. His arm is 64 cm long and has a mass of 4.0 kg. Evaluate the magnitude of the torque about his shoulder if he holds his arm straight, but 30 degrees below horizontal?
The air inside a bicycle tire pump has 221 joules of work done on it as 60.1 joules of heat is conducted away from it
a cylindrical can 8.00cm outside diameter and 20cm high floats upright in the water. how high will the water rise
Suppose that the spin magnetic quantum number ms had three possible values, rather than two. how many electrons would it take to fill the K shell
What focal length does the lens need. how many meters will the car have moved before it begins to slow down.
The proton is replaced with He2+ ion now at a distance of 3 cm from the bead. What is the magnitude of the force experienced by the helium ion
A swing is made from a rope that will tolerate a maximum tension of 6.44 x 102 N without breaking. What is the mass of the heaviest person
Water runs out of the horizontal drainpipe at the rate of 120 liters per minute. It falls 3.20 m to the ground. Assume the water doesn't splash up, what average force does it exert on the ground? (1 liter = 1 kg.)
9 grams of Alum at 200 C and 21 grams of Copper anre dropped into 50 cm^3 of Ethyl Alcohol at 15 C. what was the intitial temp of the Copper
Estimate the time constant in a RC circuit.
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