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If a lightning strike can be approximated by considering a cloud and the Earth as a parallel plate capacitor,
A) find the capacitance of such a system if the cloud's dimensions are 8 km by 9 km, at a height of 600 m.
B) If 30 C of charge sit on the cloud, find the energy stored in this system
what is the bee's speed at once afterward.
a meter stick is held vertically above your hand with the lower end between your thumb and first finger. on seeing the
on average venus is 0.72 au from the sun and its surface temperature is 735 k. calculate how much of this is due to
suppose that each vehicle is initially moving at 9.60 ms and that they undergo a perfectly inelastic head-on collision.
While, entering a freeway , a car accelerates from a speed of 90 m/s at a rate of 2.17 m/s^2 for 5.50 s. Whats the cars final velocity
In static equilibrium a spring is stretched 0.25 m by a hanging mass. If the system is initially moved up to the unstretched position and released with zero velocity, determine position of the mass (in m) after 4.2s. Take the equilibrium position ..
a block weighing 72.5 n rests on a plane inclined at 25.0deg to the horizontal. a force f is applied to the object at
A space station is moving in a circular orbit around the Earth. It makes one revolution in 90 minutes. How high above the Earth's surface is the space station
An electron starts from rest 75.5 cm from a fixed point charge with Q = -0.150 µC. How fast will the electron be moving when it is too far away.
An airplane is flying through a thundercloud at a height of 2300 m. (Flying at this height is very dangerous because of updrafts, turbulence, what is the electric field at the aircraft
A 1,720-Hz pure tone is played on a stereo in an open field. A per- son stands at a point that is 4 m from one of the speakers and 4.4 m from the other. Does the person hear the tone
An open container holds ice of mass 0.530 kg at a temperature of -15.7 Celsius . The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 810J/minute.
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