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An electric car is being designed to have an average power output of 4,200 Watt for 2 hour before needing to be recharged. (Suppose there is no wasted energy.)
(a) Find how much energy would be stored in the charged batteries?
____J
(b) The batteries operate on 50 Volt. Find what would the current be when they are operating at 4,200 Watt?
_____A
(c) To be able to recharge the batteries in 1 hour, determine how much power would have to be supplied to them?
_____W
A potential dissimilarity V is applied to a wire of cross section A, length L, and resistivity?. You want to change the applied potential difference and stretch the wire so that the energy dissipation rate is multiplied by 33 and the current is multi..
A kite is hovering over the ground at the end of a straight 44-m line. The tension in the line has a magnitude of 15 N. Find the height of the kite
The coefficient of kinetic friction between the box and the surface of the incline is 0.2. The initial speed of the box at the bottom of the incline is 2 m/s. How far does the box travel along the incline before coming to rest
A positive charge, Q = 45 is placed on the x-axis at x = -1.9 cm. A positive charge which is twice as large is brought from infinity to a point x = +1.9 cm on the x-axis. what would be the speed of the 2*(45) charge at infinity
A 210 turn coil has an area of 4.8 cm2 and rotates in a magnetic field of 0.5 T. (a) What frequency will generate a maximum emf of 10 V? (b) If the coil rotates at 60 Hz, what is the maximum emf?
The coefficient of the restitution of an object is defined as the ratio of its outgoing to incoming speed when the object collides with a rigid surface. obtain what fraction of the object kinetic energy is lost
question laser light of wavelength 635 nm is incident upon two narrow slits separated by .14 mm. on a screen 4.1 m
Suppose the space shuttle is in orbit 320km from the Earth's surface, and circles the Earth about once every90.9 minutes. Find the centripetal acceleration of the space shuttle in its orbit.
an airplane has a mass of 27500 kg and takes off under the influence of a constant net force of 41000 n. what is the
Suppose that the coefficient of kinetic friction between Zak's feet and the floor, while wearing socks, is 0.250. Knowing this, what distance d will he slide before stopping
parallel plates that have an opposite charge have a distance of 5.33 mm between them, and a 600V potential difference. What is the magnitude of the electric field strength
what is the primary microscopic origin of the magnetic field of a magnetized piece of iron, Each atomic nucleus produces a magnetic field.
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