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In a gutball tournament against people half his age, a physics professor threw his 0.4-kg soccer ball at a kid throwing a 0.6-kg basketball. The balls collided in midair (see the figure), and the basketball flew off with an energy of 92.8 J at an angle θ = 29.9 degree relative to its initial path. Before the collision, the energy of the soccer ball was 100 J and the energy of the basketball was 112 J. At what angle and speed did the soccer ball move away from the collision?
What is the direction of the induced current in resistor R when the bar magnet is moving from right to left
two very small objects whose charges are 1 c and -1 c are separated by 1.5 m. what is the magnitude of the electric
A fisherman casts his bait toward the river at an angle of 25 degrees above the horizontal. What was the initial velocity he launched the bait
Determine how much heat is required to melt a 30 g gold block starting at 20°C? The specific heat of gold is 0.031 cal/g°C. Its melting point is 1064 °C and its latent heat of melting is 15 cal/g
A 10-kg mass is moving with a speed of 5 m/s. How much work is required to stop the mass
At a rock concert, the engineer decides that the music isn't loud enough. He turns up the amplifiers so that the amplitude of the sound, By what percentage does the intensity increase
A hockey puck slides over ice with \mu _k = 0.013. What initial speed should the puck have so it travels the 56 m length of the rink
A nearsighted sheriff fires at a cattle rustler with his trusty six-shooter. Fortunately for the rustler, the bullet misses him and penetrates the town water tank, causing a leak. how far above the hole is the water level
The left end of a long glass rod 8.00 \rm cm in diameter, with an index of refraction 1.60, isground to a concave hemispherical surface with radius 4.00\rm cm. What is the index of refraction of the liquid
Consider the reaction, (2/1)H + (9/4)Be>>>> (7/3)Li + (4/2)He How much energy is liberated? What is the threshold energy for this reaction
bonnie and clyde are sliding 390 kg bank safe across the floor to their getaway car. the safe slides with a constant
There is a carton that lies on a plane tilted at an angle θ=22o to the horizontal with μk=0.12. Evaluate the acceleration of the carton as it slides down the plane
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