11. if a man is standing more than one focal length away from the focal point of a concave mirror, how will his image form in the mirror? a. enlarged b. right side up c. no image d. upside down

One hazard of space travel is debris left by previous missions. there are several thousand masses large enough to detect by radar orbiting the earth, but there are far greater numbers of very small masses such as flakes of paint. calculate the force exerted by a 0.110 mg chip of paint that strikes a space shuttle window at a relative speed of 5.00 ✕ 103 m/s and sticks, given the collision lasts 6.00 ✕ 10-8 s. such a collision chipped the window of the ill-fated challenger in june 1983, causing $50,000 of damage.

Estimate the magnitude of the electric field due to the proton in a hydrogen atom at a distance of 5.29×10 to the power of −11 m, the expected position of the electron in the atom.

Aseries circuit has a battery and resistor and a light bulb with a power of 3.0 w if the current in the circuit is 0.90 a over a period of 20 seconds what is the voltage across a lightbulb