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A projectile is launched at ground level with an initial speed of47.5 m/s at an angle of 25.0° above the horizontal. It strikes a target above the ground 2.60 seconds later. What are the x and y distances from where the projectile was launched to where it lands?
x distance m
y distance m
A driver travels northbound on a highway at a speed of 25.0m/s. What frequency does the driver observe as the police car approaches
The step-down transformer in a local neighborhood reduces the voltage from a 7,200 V line to 120 V. What current does the transformer draw from the line
A conducting spherical shell of inner radius b and outer radius c is concentric with a small metal sphere of radius a
A cowboy, 6.8 feet tall with his hat, views his full image in a plane mirror. Find the image height of a man 1.9 m tall, standing 3.3 m from the ornament. A spherical silver Christmas tree ornament, 11 cm in diameter, acts as a mirror.
a lamp is suspended by a massless string from the ceiling of a descending elevator which decelerates at 1.7 ms2. if the
Two point charges are placed on the x-axis. The first charge,q1 = 8.00 nC, is placed a distance 16.0 m from the origin along the positive x-axis; the second charge, q2 = 6.00 nC, is placed a distance 9.00 m from the origin along the negativex-axis.
The availability and even dependence
An ancient wooden club is found that contains 195 g of carbon and has an activity of 7.0 decays per second. Decide its age assuming that in living trees the ratio of 14C/12C atoms is about 1.3 multiplied by 10-12.
a projectile is shot upward off a 475 m high cliff with a speed of 65m/s at an angle of 48 with respect to the horizontal. How high does the projectile rise
A mass of 1.60 kg stretches a vertical spring 0.335 m. If the spring is stretched an additional 0.164 m and released, how long does it take to reach the (new) equilibrium position again.
You and a close friend stand facing each other. You are as close as you can get without actually touching. If a wire is attached to each of you, estimate the capacitance of this "human capacitor
A gold prospector finds a solid rock that is composed solely of quartz and gold. Find the mass of the gold in the rock
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