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A subway train starts from rest at a station and accelerates at a rate of 1.60 m/s squared for 14 seconds. It runs at a constant speed for 70 seconds and slows down at a rate of 3.50 m/s squared until it stops at the next station. Find the total distance covered.
q1. if a car travelling at 64 kmh will skid 24 m when its brakes lock how far will it skid if it is travelling at 140
A neutron collides elastically with a helium nucleus (at rest initially) whose mass is four times that of the neutron. What is the speed of the neutron after the collision
A(n) 19_kg object floating in water has 0.24 of its volume above the surface of the water. What is the volume of the object
Fill a glass with water. Look down through the water, and then through the glass to your hand on the outside. Can you see it? Tip the glass towards you and watch your hand disappear. Why? Do you know what physical phenomena this observation is rel..
A simple circuit consists of a battery connected to a lightbulb. A current of 0.243 A runs for 64.5 min, What is the voltage of the battery
A circular coil of wire with 10 turns and a 4.0 cm radius is located between the poles of a large electromagnet that produces a uniform magnetic field of 0.5T. Calculate the average induced emg across the ends of the loop
A 1 KW motor accelerates centrifuge in 1 minute from rest to speed 1000 rmp. Find moment of inertia of the centrifuge
A 34.0-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 225 N. What is the final speed of the crate after being pulled these 21.0 m
Cost of electricity varies but typical values are around $0.15/kWh. Using this price, calculate the cost of making a piece of toast in 3.00 min with a 980W toaster
A 89.0 kg skydiver hanging from a parachute bounces up and down with a period of 1.50 s. What is the new period of oscillation when a second skydiver
An electron moving horizontally at 3.15 x 106 m/s enters a vertical magnetic field, Find the magnitude of the magnetic field in tesla (T)
A wire loop of radius 0.1 m has a 2-ohm resistance. A uniform magnetic field perpendicular to the plane of the loop increases from zero to 2 T in 0.01 s
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