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A person exerts a force of 68N on the end of a door 75cm wide.
A. What is the magnitude of the torque if the force is exerted perpendicular to the door?
B. What is the magnitude of the torque if the force is exerted at a 45 degrees angle to the face of the door?
A model rocket blasts off and moves upward with an acceleration of 13 m/s^2 until it reaches a height of 27 m, What is the speed of the rocket just before it hits the ground
A shot put is released with a horizontal velocity of 12 m/s and stays in the air for 2.0 seconds At what angle with the horizontal was it released
What is an initial speed given to the rock
A projectile is fired with an initial speed of 61.7m/s at an angle of 31.9^\circ above the horizontal on a long flat firing range. Determine the maximum height reached by the projectile
A thermos contains 156 cm3 of coffee at 87.6 °C. To cool the coffee, you drop two 11.5-g ice cubes into the thermos. What is the final temperature of the coffee in degrees Celsius
When a switch is closed, the current in a wire is given as i(t)= 1.0Aexp(-.5t). How much charge will flow out if the switch is closed forever
Vector has a magnitude of 192 units and points 39.0 ° north of west. Vector points 64.0 ° east of north. Vector points 12.0 ° west of south. These three vectors add to give a resultant vector that is zero. Using components, find the magnitudes of (a)..
A lab team rides a ski lift to the top of the mountain, due to some congestion their ears fail to pop, that is the pressure inside the ear does not equalize with the outside atmosphere. Calculate the force on the eardrum
A computer to be used in a satellite must be able to withstand accelerations of up to 24 times the acceleration due to gravity, What is the minimum amplitude of vibration that must be used in this test
NASA sends a satellite to another planet by placing the satellite in a Keplerian orbit (around the sun) such that the perihelion is at the radius of the Earth's orbit (1 AU) and the aphelion is at the radius of the planet's orbit. Most of the trip is..
Suppose a muon produced as a result of a cosmic ray colliding with a nucleus in the upper atmosphere has a velocity v = 0.9500c. How far would it have traveled as observed on earth
A car weighing 8600 N moves along a level highway with a speed of 70 km/h. The power of the engine at this speed is 66 kW. what is the new speed of the car on the hill
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