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Irina standing on the edge of a cliff throws a stone at 40 degree angle above the horizontal with an initial speed of 10.0 m/s. The instant before the stone hits the ground below, it is traveling at a speed of 42 m/s. If Irina were to throw the other rock at 40 degree angle below the horizontal from the cliff instead, with the same initial speed of 10.0 m/s, what is the magnitude of the velocity of the stone just before it hits the ground? Ignore any effects of air resistance.
A 480 kg car moving at 16.2 m/s hits, from behind, another car of mass 570 kg moving at 13.3 m/s in the same direction. The second car's new velocity is 15.1 m/s. What is the coefficient of restitution for the collision
A racing vehicle travels on a circular track of radius 198 meter, moving with a constant linear speed of 69.3 m/s. Determine what is its angular speed
In a volcanic eruption, 2 km3 of mountain with a density of 1600 kg/m3 was lifted an average height of 513 m. How much energy in joules was released in this eruption
RLC alternating current circuit with a 25 ohm resistor, What is the average power when operating at twice the resonant frequency
A 79 kg person sits on a 3.7 kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.3 cm in diameter. Find out the pressure exerted on the floor by each leg of the chair, suppose the weight is evenly distributed.
A spherical object with a radius of 40.0 cm has a net charge of 37.7uC distributed uniformly throughout its volume, Using Gauss's Law, calculate the electric field 71.5 cm from the center of the sphere
how much work is required to turn an electric dipole 180deg in a uniform electric field of magnitude e 42.0 nc if p
Vortices are observed downstream of a 2-cm-diameter cylinder in 20-C atmospheric air. How far are the shed vortices apart downstream of the cylinder for an air speed of 5 m=s?
before anyone reponse please explain each step and why your doing that step this problem is throwing me off. thanks if
when it rains water vapor in the air condenses into liquid water and energy is released.a how much energy is released
A 9960 lb rocket is launched straight up, starting at rest. The thrust force pushing the rocket upward is 20000 lb. Air resistance exerts a force of 4000 lb (assumed constant). Think the point at which the rocket is 5.0 miles up.
A hobby rocket reaches a height of 68.4 meter and lands 225 meter from the launch point. Find what was the angle of launch
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