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A small airplane flies with a speed relative to the ground (ground speed) of 219.0 km/h in a direction 20.0 degrees to the east of north. If the plane is headed due north and the deviation from that direction is due to a cross wind blowing from west to east, what is the speed of the wind (in km/h)?
You want to photograph a circular diffraction pattern whose central maximum has a diameter of 1.1. How far behind the pinhole should you place the viewing screen
Two balls are on a frictionless horizontal tabletop. Ball X initially moves at 10 meters per second, which angle and at what velocity will ball y move
A series RLC circuit has a resistance of 80? , an inductance of 0.48H , and a capacitance of 3.0, f= 130Hz. What is the impedance at that frequency??F
Suppose that a simple pendulum consists of a small 58.0 g bob at the end of a cord of negligible mass. What is the pendulum's length
A ball is thrown horizontally from the top of a building that is 13.85 m high with a speed of 17.83 m/s. Neglecting air resistance, at what angle with respect to the horizontal will the ball strike the ground
In 0.675 s, a 6.80-kg block is pulled through a distance of 4.10 m on a frictionless horizontal surface, starting from rest. By how much does the spring stretch
If two tiny identical spheres attract each other with a force of 4.00nN when they are 28.0cm apart, what is the mass of each sphere
Given a spherical cell with outer radius R=6E-6 m, with thickness 5E-9 m. The potential difference across the membrane is -90 mV. Find potential energy stored within the membrane
Two conductors are joined by a long copper wire. Thus A) each conductor must be at the same potential. B) no free charge can be present on either conductor. C) each conductor carries the same free charge.
The bullet becomes lodged in the block, and the two slide together on the floor for a distance of 1.3 m before coming to rest. If the coefficient of friction between the block and the floor is 0.40, Elucidate what is the mass of the block?
A hoop and a disk, both of 0.70- m radius and 5.0- kg mass, are released from the top of an inclined plane 3.0 m high and 8.2 m long. What is the speed of the hoop
A rocket is accelerating upward at 4.90m/s2 from the launchpad on the earth. If the ball is displaced 8.50 ? from the vertical and released, find the amplitude of the resulting swings of this pendulum
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