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A billiard ball approaches a side cushion at a 45° angle with speed 1.80m/s It rebounds at a 45° angle, as shown in Figure P3.61, with the same speed.
(a) Find the change in the ball s velocity.
(b) More realistically, the ball might lose a little speed, rebounding at 1.60 m/s Now what's its velocity change?
Violet light and red light travel through air and strike a block of plastic at the same angle of incidence. The angle of refraction is 30.760° for the violet light and 31.280° for the red light. The index of refraction for violet light in plastic..
At night, the pupil of a human eye can be considered to be a slit by a diameter of 8.0 mm. The diameter would be smaller in daylight. An automobile’s headlights are separated by 1.8 m. How far away can the human eye distinguish the two headlights at ..
Hydraulics is used on many cars for operating brakes. The normal force among the brake pads and rotor needs to be 1500Newtons, and your pump can supply a pressure of 225 PSI. What is the diameter of the cylinder/piston (in cm.)?
A tennis player hits a 1.45 kg tennis ball with a racket of mass 2.5 kg. If he hits the ball with a velocity of 7.5 m/s and then stops, what impulse did he imply on the ball
A 10-kg box is stationary on the ground and pushed by a downward force of 30 N. Calculate the supporting normal force acted on the box from the ground
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. What is the speed of a satellite in a geosynchronous orbit
A cylindrical conducting shell of radius ρ=4mm and negligible thickness forms the inner conductor of coaxial line, What is the magnitude of the force (per unit length) acting to split the outer cylinder apart longitudinally
a very thin sheet of brass contains two thin parallel slits. when a laser beam shines on these slits at normal
A mass m = 3 kg is hanging from an ideal string which is passed over a fixed, frictionless pulley and then is attached to the upper end of a vertical spring whose lower end is fixed to the floor. What is the maximum stretch of the spring
A uniform 34.5-kg beam of length = 4.95 m is supported by a vertical rope located d = 1.20 m from its left end as in the figure below. The right end of the beam is supported by a vertical column.
question what is the acceleration of a 5.0 kg object acted on by a resultant force of 35.0 n? what is the acceleration
An entertainer, when performing a bubble trick, forms one bubble inside another. The surface tension of the bubble liquid is ?=0.04 N m-1. calculate the gauge pressure in the inner bubble
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