A rod slides along a metal frame. The earth’s magnetic field is 3.5 × 10−5 T at right angles to the plane of the frame. The rod is of length 0.23 m inside the frame and moves at 0.68 m/s. What is the motional EMF produced by the rod? Answer in units of V.
What is the gravitational force acting on a 70.0 kg object standing on the Earth’s surface? The radius of the earth is 6.371 x 106 m and the mass is 5.972 x 1024 kg.
1. A submarine is sent to a certain depth in the Atlantic Ocean to investigate lifeforms present in the layer. The density of seawater measured in the deep layer is 1040 kg/m3. The coefficient of compressibility of water in the deep layer is 2.45 GPa. Calculate the absolute pressure at this layer given that the ocean’s surface density is 1035 kg/m3 and the absolute pressure is Pa = 101.3 kPa.
Two particles move perpendicular to each other until they collide. (See image) Particle 1 has mass m and momentum of magnitude 2p, and particle 2 has mass 2m and momentum of magnitude p. Note: Magnitudes are not drawn to scale in any of the figures. Suppose that after the collision, the particles "trade" their momenta, as shown in the figure. That is, particle 1 now has magnitude of momentum p , and particle 2 has magnitude of momentum 2p; furthermore, each particle is now moving in the direction in which the other had been moving. How much kinetic energy, K_lost , is lost in the collision? Express your answer in terms of m and p. Consider an alternative situation: This time the particles collide completely inelastically. How much kinetic energy K_lost is lost in this case? Express your answer in terms of m and p.
A skier (m = 100 kg) is on level ground with a coefficient of kinetic friction of 0.05 m moving at a speed of 100m/s. Calculate the distance the skier will go before they stop. Use conservation of energy.
A soccer coach is working with a device that measures the velocity of a soccer ball after it has been kicked. Which units should the coach use for velocity? Choose 1 answer: meters per second kilograms meters
2. It takes 1,200 J of work to lift a car high enough to change a tire. How much work must be done by the person operating the jack if the jack is 25% efficient?
What ,begin emphasis,two,end emphasis, actions will ,begin emphasis,best,end emphasis, help people in Cape Town lessen the water shortage problem?
ASTRONOMY QUESTION Over what range of distances from the Sun would you expect to find solid, rocky material collecting together to form a terrestrial planet? Group of answer choices A) 5 - 50 AU B) beyond 50 AU C) 0.2 - 5 AU D) 0 - 0.2 AU
the force F acting on a body along a circular path depends on a mass of the body (m),velocity(v) and radius (r) of the circular path.obtain the expression for the force by dimensional analysis method(take constant k to be 1)
