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A force of 4.00 × 10-2 N is needed to move a charge of 63.0 µC a distance of 16.0 cm in the direction of a uniform electric field. What is the potential difference that will provide this force?
q1. two diodes and a resistor are placed in a single loop circuit connected to an ac generator. the diodes are
What is the surface temperature of Betelgeuse, a red giant star in the constellation of Orion, which radiates with a peak wavelength of about 970 nm? Rigel, a bluish-white star in Orion, radiates with a peak wavelength of 145 nm. Find the temperature..
A rod of length 0.850 m is attached to a pivot at one end. A force F of 2.30 N is applied to the end of the bar opposite the pivot. The force makes an angle of 65.0o with the bar. (The ? in the figure is the angle for the "line of action" of the f..
A bullet is fired through a board 14.0 cm thick in such a way that the bullet's line of motion is perpendicular to the face of the board. The initial speed of the bullet is 450 m/s and it emerges from the other side of the board with a speed of 35..
A warehouse workerpushes a crate along the floor by a force of 29.0 N that points downward at an angle of 50.0^\circ below the horizontal. Find the vertical component of theforce
A block M1 of mass 12.7 kg sits on top of a larger block M2 of mass 18.7 kg which sits on a flat surface. Find the magnitude of the acceleration of the upper block
In this problem, you will apply kinematic equations to a jumping flea. Take the magnitude of free-fall acceleration to be 9.80 . Ignore air resistance. A flea jumps straight up to a maximum height of 0.520 . What is its initial velocity as it leaves ..
A 5-kg fish swimming 1 m/s swallows an absentminded 1-kg fish swimming toward it at a speed that brings both fish to a halt immediately after lunch. What was the speed of the smaller fish
A racetrack is to have a banked curve with radius 225 m. What should be the angle of the bank if the normal force alone is to allow safe travel around the curve at 56.0 m/s
In a church choir loft, two parallel walls are 5.88 m apart. The singers stand against the north wall. The organist faces the south wall, sitting 0.619 m away from it. So that she can see the choir, a flat mirror 1.147 m wide is mounted in the south ..
A 224-? and a 211-? resistor are connected in series across an unspecified power supply. what is the exact current (in A) through the 211-? resistor
A 2 kg object is attached to a spring and placed on a horizontal, smooth surface. A horizontal force of 20.0 N is needed to hold the object at rest when it is pulled 0.200 m from its equilibrium position.
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