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A massive steel cable drags a 20.0kg block across a horizontal, frictionless surface. A 115N force applied to the cable causes the block to reach a speed of 4.30m/s in 2.30s. What is the difference in tension between the two ends of the cable?
A proton with v = 374 m/s is moving through a region in which the magnetic field is B = 2.8 T. what angle does the protons velocity make with B
q1. what effect will increase in temperature from 25 degree celsius to 32 degree celsius of the metal metre stick have
In one inertial frame (the Home Frame), two events are observed to occur at the same place but ?t = 32 ns apart in time. What is the coordinate time interval between the events in the Other Frame
A certain helium-neon laser pointer, emitting light with a wavelength of 632 nm, How many photons are emitted by the laser pointer
Find the expression for the electric field, E? , of the ring as the point P becomes very far from the ring (x >> R) in terms of the radius R
An equipotential surface that surrounds a point charge q has a potential of 585 V and an area of 1.27 m2. Determine q
Suppose a lake has a layer of ice 11 cm thick on its surface. The top of the ice layer is cooled by the atmosphere to -5.25° C. At what rate is heat transferred through a 1.5 cm2 area of the ice
If electrons are accelerated from rest in an electron gun by sending them through a potential difference of 11.0 kV
A 33.0-mH inductor has a reactance of 2.10 k?. What is the new reactance of the capacitor
A hot-air balloon is travelling upwards with a constant speed of 12 m/s. An object fell from the balloon when it was at the height of 1000 m
A 17-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 32 N. Find the coefficient of kinetic friction between the runners of the sled and the snow
Medical labs often use centrifuges to separate the different components of blood or tissue. Find the acceleration of a blood sample 0.14 m from the center of a centrifuge rotating at 230 revs/min
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