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A guitar string has a tension on it of 6500 N and length of 1.2 m. If the fundamental frequency of the string is 440 Hz, what is the linear mass density of the string?
A 6,400-kg truck runs into the rear of a 1,000-kg car that was stationary. What was the speed of the truck before the collision
The temperature of the glass surface of a 30 W light bulb is 75°C when the room temperature is 10°C. Estimate the temperature of a 150 W light bulb with a glass bulb the same size. Consider only radiation, and assume that 90% of energy is emitted as ..
A 4.86 g bullet moving with an initial speed of vi = 439 m/s is fired into and passes through a 1.06 kg block. The block, initially at rest on a frictionless horizontal surface, is connected to a spring with the spring constant of 832 N/m.
Laser light of wavelength 400 nm illuminates an array of very narrow slits, producing an interference pattern on a screen 70 cm from the slits. compute the separation between the slits
A car takes 11 s to go from v = 0 to v = 80 m/s at about constant acceleration. If you wish to find the distance travelled using the equation d = 1/2 at2, what value must you use for a.
A certain star is 14 million light-years from Earth. The intensity of the light that reaches Earth from the star is 4.00 x 10-21 W/m2. At what rate does the star radiate EM energy.
A rifle is aimed horizontally at a target 58 away. The bullet hits the target 2.5 below the aim point. What was the bullet's flight time? What was the bullet's speed as it left the barrel?
The Black body radiation emitted from a furnace peaks at a wavelength of 4.1 x 10^-6 m (0.0000041m)
What is the electric potential energy of the electron as it is at midpoint and at 14cm from 5 charge.
As a city planner, you receive complaints from local residents about the safety of nearby roads and streets, Given that the goal is to allow all vehicles to come safely to a stop before reaching the intersection, calculate the maximum desired speed ..
A golfer drives a 0.046kg golf ball from an elevated tee, giving the ball an initial horizontal velocity of 45 m/s. (a) what is the magnitude of the average force exerted by the club on the ball if the contact time for the golf club on the ball du..
The astronaut pushes on the satellite, giving it a speed of 0.25 directly away from the shuttle. Seven-and-a-half seconds later the astronaut comes into contact with shuttle.
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