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A man holds a double-sided spherical mirror so that he is looking directly into its convex surface, 40.8 cm from his face. The magnification of the image of his face is +0.21. What will be the image distance when he reverses the mirror (looking into its concave surface), maintaining the same distance between the mirror and his face? Be sure to include the algebraic sign (+ or ?) with your answer.
During a game of football, the ball is kicked by the punter with a speed of 20m/s at an angle of 40 degrees above the horizontal. A player on the other team, standing 50m away, starts running to catch the ball immediately after it is kicked. ASsu..
You are driving a long, thinking about a difficult physics problem, and you fail to notice the warning lights at the entrance to a drawbridge. how fast were you going when you struck the bridge
In a He+ ion, the electron is in 3S state Assume that units can be chosen that a = 4 ? ?0 h2 / (M e2) = 1, write down the corresponding wavefunction
A charged isolated metal sphere of diameter 20.0 cm has a potential of 9000 V relative to V = 0 at infinity. Calculate the energy density in the electric field near the surface of the sphere
A wire and a 10 ohm resistor are used to form a circuit in the shape of a square, 20cm by 20cm. What is the induced current through the resistor and its direction
Which kinetic energy equals to rotational motion
A rifle is aimed horizontally at a target 60 away. The bullet hits the target 2.5 below the aim point. What was the bullet's flight time
A basketball player makes a jump shot. The 0.603 kg ball is released at a height of 2.07 m above the floor with a speed of 7.19 m/s. What is the work done on the ball by air resistance
In a serve, a tennis player hits the ball horizontally. Neglect the effects of air resistance and the diameter of the ball. Where will the ball land if it just clears the net
The length of a simple pendulum is 0.77 m and the mass of the particle (the "bob") at the end of the cable is 0.25 kg. What is the angular frequency of the motion
A large arm model was constructed with a free arm which weights 1 kg, an additional weight of 1 kg is supported by the arm at a distance of 12 cm from the pivot. What is the total torque of the resistance
in its daily prow of the neighborhood a cat makes a displacement of 100m due north followed by an 80m displacement east. what is the magnitude and direction of the velocity
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