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you are to purchase a grating that will cause the deflection of the n=2 second- order bright band for red light to be 42°. How many lines per centimter should your grating have? the wavelength is 650 nm.
A car drives north at 46 for 10 and then turns east and goes 5 at 60. At last, it goes southwest at 30 for 6.0. What is the average velocity.
A piano is brought upstairs by two workers. Due to a mistake by one of the workers, the piano rolls down the stairs and finally comes to rest by the outside door.
The period of motion of an object-spring system is T = 0.546 s when an object of mass m = 254 g is attached to the spring, Find the frequency of motion in hertz
On a workday the average decibel level of a busy street is 85 dB, with 100 cars passing a given point every minute. what is the decibel level of the street
A husband and wife take turns pulling their child in a wagon along a horizontal sidewalk. find the magnitude of the pulling force exerted by his wife
The first stage of a space vehicle consumed fuel and oxidizer at the rate of 1.85 104 kg/s, with an exhaust speed of 3.30 103 m/s. Calculate the thrust produced by this engine
A sled with a mass of 8.00 kg moves in a straight line on a frictionless horizontal surface. find the force acting on the sled
how fast is the mass moving when leaves the spring. What is her velocity relative to the ice surface.
An electron is moving northwards with a velocity 10^7 m/s in a magentic feild of 3T directed eastwards. Calculate the instaneous force on the electron
A 2.27-kg block (M1) and a 5.87-kg block (M2) are connected by a massless string. Applied forces, F1 = 10.1 N and F2 = 4.83 N, act on the blocks, What is the net force acting on M1
A particle is moving with a certain speed. Its speed and energy are being measured with respect to Earth. determine the original speed of the particle
The mass of a regulation tennis ball is 58.0 g (although it can vary slightly), and tests have shown that the ball is in contact with the tennis racket for 31.0 ms. what impulse did he exert on the ball
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