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A speedboat starts from rest and accelerates at +2.15m/s2 for 8.35 s. At the end of this time, the boatcontinues for an additional 8.62 s with an acceleration of +0.629m/s2. Following this, the boat accelerates at -0.968m/s2 for 8.87 s. (a) What is the velocity of the boat at t = 25.84 s? (b) Find the total displacement of the boat.
The electric potential difference between two infinite, parallel metal plates is V. If the plates are separated by a distance L = 4.50 mm and the electric field between plates is E = 270 V/m, what is V.
A proton orbits a long, uniformly charged wire, making 1.6×10^6 revolutions per second. The radius of the orbit is 1.8 cm. What is the wire's linear charge density
Which kind of research is Professor Carter employing.
A particle travels 16 times around a 18-cm radius circle in 37 seconds. What is the average SPEED (in m/s) of the particle
A large fish hangs from a spring balance supported from the roof of an elevator. What will the balance read if the elevator cable breaks
Consider two masses m1 and m2 at the top of two frictionless inclined planes. Both masses start from rest at the same height. However, the plane on which m1 site is at an angle of 30 degrees with the horizontal,
Light inside an optical fiber tube hits the wall between the tube and air and is totally internally reflected. what is the index of refraction of the tube
A child's toy consists of a piece of plastic attached to a spring in the figure below. The spring is compressed against the floor a distance of 2.00 cm, estimate the force constant of the spring
q1. a 0.12-kg ball is placed in a shallow wedge with an opening angle of 120deg as shown in the figure. for each
A point on the rim of a 0.70 m diameter grinding wheel changes speed uniformly from 12 m/s to 26 m/s in 7.5 s. What is the average angular acceleration of the wheel during this interval
Two long parallel wires seperated by 50cm both carry currents of 4.0 A in the same vertically up direction. Find the magnetic field midway between the wires
A very long non conducting cylinder of diameter 10.0 cm carries charge distributed uniformly over its surface. Each meter of length carries +5.50 C of charge. A proton is released from rest just outside the surface.
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