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A concave mirror has a focal length of 20 cm. What is the position (in cm) of the resulting image if the image is inverted and four times smaller than the object?
A ping-pong ball of mass 2 gm and traveling with a velocity of 2 m/s collides with stationary tennis ball of mass 10 gm. Calculate the velocity of the ping-pong ball after the collision
What is the magnification of an astronomical telescope whose objective lens has a focal length of 77 cm, What is the overall length of the telescope when adjusted for a relaxed eye
A laser beam is incident on two slits with a separation of 0.210 mm, and a screen is placed 4.80 m from the slits. find the wavelength of the laser light
An underwater diver sees the sun 58 above horizontal. How high is the sun above horizon to a fisherman in a boat above the diver.
A 66-N m torque acts on a wheel with a moment of inertia 175 kg m2. If the wheel starts from rest, explain how long will it take the wheel to make one revolution?
A person wearing a seat belt can withstand an acceleration of -310m/s squared. How thick should barriers be to carefully stop a car that hits a barrier at 120km/h.
A ship sets out to sail to a point 148km due north. An unexpected storm blows the ship to a point 109km due east of its starting point.
While looking through the Mt. Palomer telescope, you discover a large planetary object orbited by a single moon. calculate the density of Planet Hephaestus
Light has a wavelength of 299.3 nm and a frequency of 7.403 × 1014 Hz when traveling through a certain substance. What is the refraction index of this medium
what is the strength of the electric field 4.0cm from a small glass bead that has been charged to positive 4.0cm?
A platinum resistance thermometer has resistances of 230.0 omegacap.gif when placed in a 0°C ice bath and 236.8 omegacap.gif, What is the melting point of this substance
An undersea research chamber for aquanauts is spherical with an external diameter of 4.7 m. calculate the buoyant force on the chamber
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