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An especially violent lightning bolt has an average current of 2.86 x 103 A lasting 0.220 s. How much charge is delivered to the ground by the lightning bolt?
A place-kicker must kick a football from a point 36.0 m (about 40 yards) from the goal. Half the crowd hopes the ball will clear the crossbar, what is the initial horizontal position of the football
the most common use for the nand latch is as a switch debouncer. what is switch bounce and why do we need to eliminate
the electric field 0.340 m from a very long uniform line of charge is 650 nc. how much charge is contained in a 2.00-cm
Total internal reflection will occur when the refraction angle is 90' degrees or more. find the angle of incidence at which total interanl refraction in water will occur
The most energy efficient way to send a spacecraft to the Moon is to boost its speed while it is in circular orbit about the Earth such that the new orbit is an ellipse. The boost point is the perigee of the ellipse, and the point of arrival at th..
A vertical electric field of magnitude 2.00 × 104 N/C exists above the Earth's surface on a day when a thunderstorm is brewing. A car with a rectangular size of 6.00 m by 3.00 m is traveling along a roadway sloping downward at 10.0°. find the elec..
The truncated form of the virial equation is P(VB) = RT , where B is a constant that depends only on temperature. Derive the expression for reversible isothermal work for a gas that obeys this equation of state.
A 40-kg girl is bouncing on a trampoline. During a certain interval after leaving the surface of the trampoline, kinetic energy decreases to 240J from 470J. How high does she rise during this interval? Avoid air resistance.
If you apply a 4 N force on a string wrapped around an object that has an inertia of 0.03 \mathrm{kg\:m}^2 , what is the angular acceleration you expect from the falling object
Two blocks with masses m = 16.7 kg and M = 70.1 kg are not attached. The coefficient of static friction between the blocks is 0.45 but the surface beneath M is frictionless. What is the minimum force F required to hold m against M?
You are riding in a school bus. As the bus rounds a flat curveat constant speed, a lunch box with the mass 0.500kg, What is the speed of the bus
A major leaguer hits a baseball so that it leaves the bat at a speed of 28.0 m/s and at an angle of 35.3 degrees above the horizontal. Calculate the vertical component of the baseball's velocity
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