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An airplane, diving at an angle of 54° with the vertical, releases a projectile at an altitude of 770 m. The projectile hits the ground 3.50 s after being released. What is the speed of the aircraft?
A baseball is hit with a speed of 33.0 ms-1 at an angle of 56.0 degrees. It land's on the flat roof of a nearby building with a height of 13 m. If the ball was hit when it was 1.7 m above the ground, what horizontal distance does it travel before it ..
A particle of charge +3.03 x 10-6 C is 10.2 cmdistant from a second particle of charge -1.85 x 10-6 C.Calculate the magnitude of the electrostatic force between the particles.
A top has a moment of inertia of 2.78 × 10^?4 kg·m^2 and is initially at rest. It is free to rotate about a vertical stationary axis. What is the angular velocity of the object
The density of petrol is 730 kg/m^3 at 0 degrees C. Its average coefficient of expansion is 9.60 * 10^-4 degrees C. Assuming you have a 45 litre full tank, how many extra grams of petrol would you get
A car battery with 12 V and negligible internal resistance (r=0) is connected three identicle resistors with R=20. find the current and power of each resistor consumes when the switch is open
A uniform horizontal wire with a linear mass density of 0.50 g/m carries a 1.8 A current. It is placed in a constant magnetic field with a strength of 4.00 x10-3 T. The field is horizontal and perpendicular to the wire. Neglect the magnetic field ..
You hold a ruler that has a charge on its tip 2 cm above a small piece of tissue paper to see if it can be picked up, What is the minimum charge required to pick up the tissue paper
A guitar string is fixed between two points, 53.0cm apart. Its linear density is 12.0g/m. Now suppose the string is vibrating in its third harmonic. What is the distance between nodes
A daring ranch hand sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 10.0 m/s, and the distance from the limb to the level of the saddle is 3.00 m.
A laser has a power of 22.9 W and a beam radius of 0.515 mm. Find the intensity of the laser
Scarlet has taken a summer job at a water park. In her act sheglides up a 2.0 m high frictionless ramp then sails over a 5 m widecage filled with hungry sharks. What is the minimum speed at whichshe can begin her ascent of the ramp in order to avo..
A green ball is thrown vertically downward to the ground with an initial speed of 5m/s, at time t = 0, from a vertical height of 100m above the ground. find the magnitude and direction of velocity of the red ball
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