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Five thousand joules of heat is put into a Carnot engine whose hot and cold reservoirs have temperatures of 600 and 200 K, respectively. How much heat is convertedd into work?
At the distance of the earth from the sun, the pressureexerted by sunlight is about 10-5 Pa. what acceleration does this force give it
Suppose that the sound level of a conversation is initially at an angry 74 dB and then drops to a soothing 50 dB. Assuming that the frequency of the sound is 516 Hz, determine the (a) initial and (b) final sound intensities (in ?W/m2) and the (c) ..
An automobile has a total mass of 1700 kg. It accelerates from rest to 40 km/h in 10 s. Assume each wheel is a uniform 32 kg disk. find the total kinetic energy of the automobile
The voltage from a wall plug can be described by the equation V(t)=170sin[2π(60Hz)t] V. What would you read on a DMM reading AC voltage??
A 1400kg sedan goes through a wide intersection traveling from north to south when it is hit by a 2400kg SUV traveling from east to west. How fast was sedan traveling just before the collision
If the induced voltage is 0.5 V, as B field is decreasing at a rate of 0.5 T/s in a loop. Calculate the area of the loop
An electromagnetic doorbell has been constructed by wrapping 66 turns of wire around a long, thin rod, What is the magnitude of the angular velocity of the rod
The coefficient of friction between a block of mass m1= 3Kg and the surface is mu=.4. The system starts from rest. What is the speed of the ball of mass m2=5Kg when it has fallen a distance of h=1.5m?
A 300 DC power supply has fully charged a 15 mF capacitor. The charged capacitor is connected to a 20 mH inductor. find the magnetic energy in the inductor
The elementary particle called a muon is unstable and decays after 2.20 ?s, as observed in its rest frame, What lifetime do you observe for the muon
A certain freely falling object, released from rest, requires 1.50 s to travel the last 30.0 m before it hits the ground. Find the velocity of the object when it is 30 m above the ground
A bat flying at 5.25 m/s is chasing an insect in the same direction. The bat emits a 39.90-kHz chirp and receives back an echo at 40.50 kHz. What is the speed of the insect
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