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Runner A is initially 1.0 mi west of a flagpole and is running with a constant velocity of 8.0 mi/h due east. Runner B is initially 7.0 mi east of the flagpole and is running with a constant velocity of 5.0 mi/h due west. How far are the runners from the flagpole when they meet?
A dead tree is initially stationary and there is a 30.0-degree angle between the tree and the vertical, How fast is the top of the tree moving (in m/s) just before it hits the ground
A 0.880 m long brass pendulum experiences a 20.0°C temperature increase. Find the ratio of the change in period to the original period
q1.a thrill-seeking cat with mass 4.00 kg is attached by a harness to an ideal spring of negligible mass and oscillates
A 0.75?F capacitor is charged to 90V . It is then connected in series with a 35? resistor and a 150? resistor, How much energy is dissipated by the 35? resistor
what magnitude of horizontal force must the person apply to keep it moving with constant velocity? c) If the person continued to push with the force used to start the motion, what would be the acceleration of the trunk.
A 2.0 mm-diameter glass bead is positively charged. The potential difference between a point 2.2 mm from the bead
Find out the magnitude of the acceleration of the electron. How large is the pulling force it the wagon is moving with a constant speed.
here is a point on the x-axis between the two charges where the electric field is zero. Find out the location of the point where the electric field is zero.
What velocity would a proton need to circle Earth 1400 km above the magnetic equator, where Earth's magnetic field is directed horizontally north and has a magnitude of 4 x10-8 T .
questionhuman blood contains plasma platelets and blood cells. to part plasma from other components centrifugation is
From what height will you have to drop the rock on Earth so that the fall-time on both planets is the same.
Calculate the energy needed to accelerate a spaceship with a mass m = 25 × 103 kg toa speed of 0.40c. Compare this number with the approximate annual energy usage ofEarth, 1021 J
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