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If the distance from Earth to the Moon is 4 × 108 m, what diameter would be required for a telescope objective to resolve a Moon crater 320 m in diameter? Assume a wavelength of 420 nm. Answer in units of m.
Light of wavelength 659.4 nm is emitted by a star. The wavelength of this light as measured on Earth is 661.4 nm. How fast is the star moving with respect to Earth
A long coaxial cable consists of two cylindrical shells. The inner cylinder with radius a carries a uniform line charge +λ (charge per unit length along the z direction), and the outer cylinder has a radius b and carries a line charge -λ. The char..
While in Europe, a tourist hears on the radio that the temperature that day will reach a high of 19C. What is this temperature on the Fahrenheit scale?------F
Think about an infinite coaxial cable. In the region 0 2 into the page. In the region a 0 . What is the magnetic field in all space, and what value must k have so that the field vanishes for r>b?
a 4 cm diameter vertical cylinder is sealed at the top by a frictionless piston. the piston is23 cm above the bottom of
A 90 gram ball collides elastically with a 330 gram ball that is at rest. obtain the velocities of the two balls after the collision
A stuntman drives a car over the top of a hill, the cross section of which can be approximated by a circle of radius 160 m. What is the greatest speed at which he can drive without the car leaving the road at the top of the hill?
a convergent lens has a focal length of 7cm. a 2cm tall image forms 30cm from the lens.a how far is the magnification?b
A relaxed biceps muscle requires a force of 25.3 Newton for an elongation of 3 centimeter; Compute Young modulus for the muscle tissue under each of these conditions
a child rolls a 0.685kg basketball up a long ramp. the basketball can be considered a thin walled hollow sphere. find the maximum vertical height increase of the ball
If a pitcher throws a baseball at 101 mi/h, how far would the ball fall vertically after traveling 66m horizontally
A couple of astronauts agree to rendezvous in space after hours. Their plan is to let gravity bring them together. She has a mass of 60.0 kg and he a mass of 76.0 kg , and they start from rest 15.0 m apart.
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