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a 760 kg light weight helicopter ascends from the ground with an acceleration of 2.5m/s^2. Over a 6 second interval, what is the work done by the lifting force?
Find the total number of lines in a 2.90 wide diffraction grating whose third-order spectrum has the 640 hydrogen- spectral line at an angular position of 39.0.
A helicopter is ascending vertically with a speed of 4.50 m/s. At a height of 195 m above the Earth, a package is dropped from a window. How much time does it take for the package to reach the ground.
Clifford is in a real hurry, however, and skips the speed ramp. Starting from rest with an acceleration of 0.49 m/s2, he covers the same distance as the ramp does, but in one-fourth the time. What is the speed at which belt of the ramp is moving.
Compute Earth's gravitational force on the Shuttle astronauts while orbiting at an altitude of 220 miles (or 354 km) above Earth's surface.
A box is lifted with a pry bar , by slipping the bar under the box and lifting up on the bar. what is the size of the force required to lift the box
A plank 2.00 cm thick and 12.9 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m horizontally over the sea below. find the shear modulus of the wood
A long, straight wire runs along the y-axis. The wire carries a current in the positive y-direction that is changing as a function of time according to i = 8 A + (0.2 A/s)t. A loop of wire is placed in the xy-plane near the y-axis. The loop has di..
A uniformly charged sphere has a potential on its surface of 450 V. What is the radius of the sphere
Determine the greatest vertical displacement of the pendulum (height). The mass lost by the rocket during these 30.0 is negligible. What impulse does an engine impart to the rocket?
Determine the electrostatic potential energy of an electron in the ground state of the hydrogen atom
The doctors planning a radiation therapy treatment have determined that a 50g tumor needs to receive 0.21J, What is the dose in gray
Calculate the verage speed and time lead by the runner using the definition of average speed.
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