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A galaxy cluster in Ursa Major has a recessional velocity of 15,000 km/s. Using 73 km/s/Mpc for Hubble's constant, find the distance to the galaxy cluster.
03.3 A boat is heading upstream when a float is dropped overboard and carried downstream. What is the boat's speed in still water?
A 1.5kg weight hangs from a 8.0kg, solid wheel with a 20 cm circumfrence by a thin string wrapped several times around the circumfrence. How fast (in radians/second) is the wheel turning just before the weight hits the floor
A 12.0 kg box is pulled along a horizontal surface by a force Fp at a 30° angle above the horizontal. Calculate the acceleration of the box assuming a force of magnitude 45 N is applied at the 30° angle
a fire hose 3.51 cm in diameter is capable of spraying water at a velocity of 24.7 ms. for a continuous horizontal flow
A 1250 kg car is moving at 23.2 m/s. Then, 323 kJ of work is done on the car to increase its speed. What will be the car's new speed
For a particular collision you detect the emitted products and find 15 protons, 2 antiprotons, 6 positrons, and 25 neutral particles. How many electrons are also emitted?
It is defined as the ratio of thrust force produced to fuel (and oxidizer) consumption rate by weight (not by mass), weight being measured at the Earth's surface. Calculate the specific impulse for a rocket engine with nozzle speed (exhaust speed..
An object is placed 19 cm to the left of a converging lens of focal length 29 cm. Find the position and magnification of the final image
A 25 pF parallel-plate capacitor with an air gap between the plates is connected to a 100 V battery. What is the change in the charge on the positive plate
In which scenario do you experience the larges acceleration? Explain why using physical principles you have learned.
Mitch is sitting at rest on a wheeled chair in a long hallway. Mitch and the chair have a combined weight of 540 N. how far will Mitch travel after catching the ball
A ball is thrown against a smooth wall. The bass has mass 6.0g and strikes the wall in the perpendicular direction with a speed of 12 m/s. what is magnitude of the impulse delivered by the wall
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