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The intensity of sunlight at the top of the earth's atmosphereis about 1390 W/m2.The distance between the sun and earth is 1.50 x 1011m, while that between the sun and a space probe is 3.06 x1010m. What is the intensity of sunlight that reaches the probe?
A batter hits a pitched ball when the center of the ball is 1.20 m above the ground. The ball leaves the bat at an angle of 45° with the ground. With that launch, the ball should have a horizontal range (returning to the launch level) of 107 m.
Blocks A (mass 2.00kg) and B (mass 10.00kg) move on a frictionless, horizontal surface. Initially, block B is at rest and block A is moving toward it at 2.00 m/s. Find the velocity of each block after they have moved apart
A point source emits 26.2 W of sound isotropically. A small microphone intercepts the sound in an area of 0.121 cm2, determine the power intercepted by the microphone
A guitar string is 91.00cm long and has a mass of 3.6g. From the bridge to the support post (= L) is 60 cm, and the string is under a tension of 551 N.
question1a fishing pole is 2.00 m long and inclined above horizontal at the angle of 20.0deg. a fish is pulling on it
Consider a 10.0 kilogram block of copper, specific heat = 387 J/kg*C. The initial temperature of the copper is 25*C, obtain the final temperature of the block
The position of a particle in cm is given by x = (7) cos 10?t, where t is in seconds. What is the amplitude of the particle's motion
A plane has a resultant velocity of 550 m/s N of E and airspeed 350 m/s east. Find the velocity of the wind
A spherical mass on a rod of length L rotates rigidly about a fixed axis at the opposite end of the rod. What is the sphere's linear displacement
A 140g oscillator has a speed of 90.5cm/s when its displacement is 1.70cm and 55.0cm/s when its displacement is 5.20cmcm. What is the oscillators maximum speed
An astronaut moving with a speed of 0.53c relative to Earth measures her heartrate to be 71 beats per minute. Calculate the astronaut's heart rate, as measured on Earth
A standing wave in a pipe with both ends open has a frequency of 444 Hz. The next higher harmonic has a frequency of 602 Hz. Determine the fundamental frequency. How long is the pipe?
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