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A 28 cm tall object is placed in front of a concave mirror with a radius of 33 cm. The distance of the object to the mirror is 84 cm. Calculate the focal length of the mirror. Calculate the image distance. Calculate the magnification of the image (Remember, a negative magnification corresponds to an inverted image). Calculate the magnitude of the image height.
A racing dog is initially running at 15.0 m/s, but is slowing down. How fast is the dog moving when its kinetic energy has been reduced by half
A body cools from 50 degre celcious to 49 degree celcious in 5 seconds. Hw long would it take to cool from 40 degree celcious to 39 degree celcious.
A Major League fastball is thrown at 92.9 mph and with a spin rate of 108 rpm. how many full turns does the ball make between release and catch
During a lightning flash, there exists a potential difference of Vcloud - Vground = 1.6 x 109 V between a cloud and the ground. As a result, a charge of -15 C is transferred from the ground to the cloud. How much work Wground–cloud is done on the c..
A 76 kg window cleaner uses a 13 kg ladder that is 5.0 m long. He places one end on the ground 3.0 m from a wall, What is the angle of this force on the ladder
A Ferris wheel with a radius of 7.7 m rotates at a constant rate, completing one revolution every 37 s, Find the direction and magnitude of a passenger's acceleration when at the bottom of the Ferris wheel
While a person is walking, his arms swing through approximately a 45.0 degree angle in 0.530 s. Find the force that the blood vessel must exert on the blood
When a 9.80 kg mass is placed on top of a vertical spring, the spring compresses 4.00 cm. What would the compression of the spring (in cm) be if the spring-mass system was placed
On a workday the average decibel level of a busy street is 84 dB, with 100 cars passing a given point every minute. what is the decibel level of the street
Suppose he enters the water at a speed of 16.0 m/s via path 1. Explain how fast is he moving on path 2 when he releases the rope at a height of 4.00 m above the water? Ignore the effects of air resistance.
A convex lens with 19.8 is mounted 40.0 to the left of a concave lens. When an object is placed 31.0 to the left of the convex lens, What is the focal length of the concave lens
A capacitor with an initial potential difference of 144 V is discharged through a resistor when a switch between them is closed at t = 0 s. At t = 10.0 s, What is the time constant of the circuit
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