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If a man is capable of lifting a 121 lb stone on land, how heavy a stone could he lift under water? The specific gravity of the stone is 2.60.
A lead ball weighing 10 N falls 0.8 m from rest into a bucket of sand. The ball stops after making a crater 0.2 m deep. According to the work-energy theorem the work done by the sand on the ball in bringing it to rest is...?
A generator at one end of a very long string creates a wave
Suppose the shuttle increases its speed so that it has a length of 36.1 m when viewed by a stationary observer. How long would it take to complete one orbit
A 120g ball moving at .30 m/s in the + x-direction is subject to a 0.15N force in the - y-direction for 3.0s. Find the magnitude of the ball's momentum change
A thin stream of water flows smoothly from a faucet and falls straight down. What is the vertical distance h between these two points
A mass-spring system oscillates with period of 0.23 sec. The spring's spring constant k = 450 N/m. What mass is attached to the spring
The voltage from a wall plug can be described by the equation V(t)=170sin[2π(60Hz)t] V. What would you read on a DMM reading AC voltage??
The moon's diameter is 3.48 x 10 6 m, and its mean distance from the earth is 3.85 x 10 8 m. what is the diameter of the moon's image on the screen
q1. a father m 92 kg and son m 44 kg are standing facing each other on a frozen pond. the son pushes on the father
An electric power station is producing 1.60 × 103 W of power that is to be sent to a small town located 11 km away, Find the power lost in heating the wires if the voltage is stepped up from 130 V to 1400 V
The three principal visible spectral lines from hydrogen have wavelengths 434 nm, 486 nm, and 656 nm. Find the angular position of the third spectral line in hydrogen
A 1 115.0 kg car traveling initially with a speed of 25.000 m/s in an easterly direction crashes into the back of a 8 200.0 kg truck moving in the same direction at 20.000 m/s. What is the velocity of the truck right after the collision
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