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In a TV set, an electron beam moves with horizontal velocity of 3.1×107 m/s across the cathode ray tube and strikes the screen, 50 cm away. The acceleration of gravity is 9.8 m/s2 .
How far does the electron beam fall while traversing this distance?
In one cycle, a freezer uses 780J of electrical energy in order to remove 1730J of heat from its freezer compartment at 10.0 oF. What is the coefficient of performance of this freezer
A 189g block is launched by compressing a spring of constant k= 200 N/m a distance of 15cm. After launch, where does the block finally come to rest? Measure from the left end of the frictional zone
A horizontal plank 4.00 m long and having mass 20.0 kg rests on two pivots, Find the magnitude of the force exerted on the plank by the second pivot
Two capacitors, C1 = 28.0 µF and C2 = 34.0 µF, are connected in series, and a 24.0-V battery is connected across them. (a) Find the equivalent capacitance, and the energy contained in this equivalent capacitor.
A 260 wooden raft floats on a lake. When an 80 man stands on the raft, it sinks 5.0 deeper into the water. When he steps off, the raft vibrates for a while. What is the frequency of vibration.
Positive point charges q and 2q are located at x = 0 and x = 3d, respectively. What is the electric field at x = d (point P)? (Use any variable or symbol stated above along with the following as necessary: k for Coulomb constant.) magnitude E = di..
The bullet becomes embedded in the block. If the bullet-block system compresses the spring by a highest of 90cm, what was the speed of the bullet at impact with the block.
A block of mass 3.41 kg is attached to a spring (k=31.9 N/m) by a rope that hangs over a pulley of mass M=6.82 kg and radius R=3.61 cm. find the maximum extension of the spring
What is this force in Newtons.
questiona cart of mass m 1.80 kg can roll without friction on a level track. a light string draped over a light
Suppose a monochromic light strikes a grating at normal incidence. what is the frequency of the light that passes through
A solid, uniform ball rolls without slipping up a hill, as shown in the figure . At the top of the hill, it is moving horizontally; then it goes over the vertical cliff. How fast is it moving just before it lands
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