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The image of the moon is formed by a concave mirror whose radius of curvature is 4.52 meters at a time when the moon's distance is 3.80x10^5 km. What is the diameter of the image if the diameter of the moon is 3480 km?
Suppose the skin temperature of a naked person is 34 °C while the person is standing inside a room whose temperature is 25 °C. The skin area of the individual is 2 m2.
A puck of mass m1 = 63g and radius r1 = 4.30 cm glides across an air table at a speed of = 1.50 m/s. It makes a glancing collision with a second puck of radius r2 = 6.00 cm and mass m2 = 115 g (initially at rest) such that their rims just touch.
A hanging copper wire with diameter 1.4mm (1.4e-3m) is initially 0.95 m long. Find the approximate value of the effective spring stiffness of the inter atomic force
A spaceship is moving toward earth at .6c. It fires arocket away from the earth at .4c relative to the spaceship. What is the velocity of the rocket relative to the earth
Two forces act on a 55 kg object. One force has magnitude 65 N direction 59 degree clockwise from the positive x-axis, What is the magnitude of this object's acceleration
An RL circuit consists of a switch, an emf source Eo, a 4 kΩ resistor, and a 5 H inductor. If the potential across resistor is 16 V 5 ms after switch is closed, find out the source emf, Eo.
A hotel elevator ascends 160m with a maximum speed of 4.20 m/s. Its acceleration and deceleration both have a magnitude of 1.0 m/s2. How long does it take to make the complete trip from bottom to top.
A sound wave from a siren has an intensity of 98.5 W/m2 at a certain point, What is the intensity level of the sound wave
What is your displacement after running 2.60 west on Strawberry Fields, 1.1 south on Penny Lane, and 5.0 north of east at 40 degree on Abbey Road.
a 280 kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. the ramp is inclined
the concept of thermionic emission is the basis of modern x-ray tubes which are the workhorse of a medical x-ray image.
What is the magnitude of the electric field produced by a charge of magnitude 6.40(mu)C at a distance of 1.00m
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