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A laser beam is reflected by a plane mirror. It is observed that the angle between the reflected and incident beams is 36 degree. If the mirror is now rotated so that the angle of incidence increases by 5.0 degree, find the new angle between the reflected and incident beams?
_________°
A car is moving down a street at 53 km/h. A child all of a sudden runs into the street. If it takes the driver 0.74s to react and apply the brakes, how many meters will the car have moved before it begins to slow down?
You're the operator of a 1.20×104 V rms, 60 Hz electrical substation. When you get to work one day, What is the rms current leaving the station
A group of college students eager to get to Floride on a spring break drove the 637 mi trip with only minimum stops. They computed their average speed for the trip to be 54.2 mi/h. How many hours did the trip take?
A spherical object has an outside diameter of 50.0cm. Its outer shell is composed of aluminum and is 0.800cm thick. Determine the object's average density
A mouse of mass m jumps on the outside edge of a freely turning ceiling fan of rotational inertia I and radius R. By what ratio does the angular velocity change
a box with a weight of 50 n rests on a horizontal surface. a person pulls horizontally on it with a force of 10 n and
A bicyclist coasts down a 7.0 degree hill at a steady speed of 5.0 m/s. what must be the cyclist's power output to climb the same hill at the same speed
1. suppose that you want to cook a 1 inch 2.5 cm thick steak to medium doneness which is an internal temperature of
An RC circuit in an electronic timer is arranged therefore that a switch is activated when the potential difference across the capacitor falls to 50% of its initial value. The capacitance is 0.15 F.
Sam, whose mass is 75\;kg, takesoff across level snow on his jet-powered skis. What is Sam's top speed
A plank 2.00 cm thick and 13.0 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m horizontally over the sea below, find the shear modulus of the wood
It position is xo>0 and i give it a kick so that it moves back towards the origin and executed simple harmonic motion with amplitude 2xo. Find out its position as a fuction of time in the forum of x(t)=acos(wt-&)
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