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A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 62.12 diopters, and the lens-to-retina distance is 1.629 cm.
(a) How far is the blackboard from her eyes?
(b) If the writing on the blackboard is 7.32 cm high, what is the height of the image on her retina?
Four point charges have the same magnitude of 2.18 x10-12 C and are fixed to the corners of a square that is 3.95 cm on a side. Three of the charges are positive and one is negative. find the magnitude of the net electric field that exists at the ..
A proton is released from rest inside a region of constant, uniform electric field E1 pointing due North, What is the ratio of the magnitude of E2 to the magnitude of E1
A ferrari race car on the straight road starts from rest, accelerating at 2.00 m/s^2 until it reaches a speed of 20.0m/s. Then the car travels for 20.0 s at the constant speed until the brakes are applied, stopping the truck in a uniform manner in an..
what is the magnitude and direction of the force. explain the magnitude and direction of the force she exerts on you?
A car entering a freeway ramp accelerates from 14 m/s to 25 m/s in 10 seconds. what is the cars average acceleration during this 10 seconds.
find the following for the time at which the cart is at position P2, with one-third of the loop in the magnetic field.
assume you throw someone a ball, thereby transporting kinetic energy. Could you consider the motion of the ball to be a mechanical wave pulse.
An unmarked police car travelling a constant 95 km/h is passed by a speeder travelling 145km/h. Precisely 1 s after the speeder passes, the police officer steps on the accelerator.
1) Find the net force acting on particle 3 due to the presence of the other two particles. Report you answer as a magnitude and a direction measured from the positive x axis.
With brakes fully applied, a 1550 kg car deccelerates from a speed of 78.0 km/hr. What is the change in the kinetic energy of the car
What is the maximum sideways angle. What is the train's acceleration after its wheel begins to stick.
Coefficient of kinetic friction between tires and road
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