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A lightning flash may transfer up to 30 C of charge through a potential difference of 10^8 V.
(a) How much energy does this involve? State your answer in eV.
(b) For how long could this much energy light a 60 W bulb?
Far in space, where gravity is negligible, a 480-kg rocket travelling at 95 m/s fires its engines. The figure shows the thrust force as a function of time. The mass lost by the rocket all through these 30s is negligible.
what is the buoyant force on a beachball of diameter 20.0 cm that is HALF submerged in a fresh water pool
You are going to change the angle phi2 of applied force on the right side of the Equal Arm Balance keeping the holding force constant and the Balance in equilibrium
Smaller mammals use proportionately more energy than larger mammals; that is, it takes more energy per gram to power a mouse than a human. A typical mouse has a mass of 20 g and, at rest, needs to consume 3.0 Cal each day for basic body processes.
A sound wave traveling at 341m/s is emitted by foghorn of a tugboat. An echo is heard 3.30s later.
A train horn is heard at a 50 dB level by an observer 10 km away. What is the average power generated by the horn
After the skier on the hill had been moving for 5.0 s, friction of the snow suddenly increasedmaking the net force on the skier zero. what is new coefficient of friction? how fast would the skier now be going after skiing for 5.0s.
string under a tension of 50.5 N is used to whirl a rock in a horizontal circle of radius 2.55 m at a speed of 20.3 m/s on a frictionless surface, What is the breaking strength, in newtons, of the string
A cart that is initially at rest moves down a slope that is inclined at 5o above the horizon, What is its final speed at the end of the slope
Moe, Larry, and Curly stand in a line with a spacing of = 1. Larry is 3.00 in front of a pair of stereo speakers 0.8 apart. The speakers produce a single-frequency tone, vibrating in phase with each other.
Suppose I have two infinite wires, one on the y axis and one on the x axis, each charged uniformly with lamda C/m. Find an expression for the electric field E at any point in the x and y plane as a function of x and y.
A wheel has a maximum rate of rotation of 150 revolutions per minute. Starting from rest, Calculate the magnitude of its angular acceleration
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