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Q1. A truck travels beneath the airplane that is moving 125 km/h at an angle of 46 degrees to the ground. How fast must truck travel to stay beneath the airplane?
Q2. The distance from the point on the surface of Earth to a point on a surface of the moon is measured by aiming a laser light beam at the reflector on the surface of moon and measuring the time required for the light to make a round trip. The uncertainty in the measured distance Δx is linked to the uncertainty in the measured time Δt by Δx = 1/2 c Δt. The time intervals can be measured to ±0.90 ns.
Assume the charge on black hole is 5740 C. At what distance from it is the electric potential equal to 1100 V.
What is wavelength of the X-ray photon
Two speakers, one directly behind the other, are each generating a 374-Hz sound wave. What is the smallest parting distance between the speakers that will generate destructive interference at a listener standing in front of them? Take the speed of so..
Find out direction and magnitude of force
Two points are located on a rigid wheel that is rotating with an increasing velocity about fixed axis. The axis is perpendicular to the wheel at its center. Point 1 is located on the rim and point 2 is halfway between rim and axis .at any given insta..
As part of a safety investigation, two 1400 cars travelling at 18 are crashed into different barriers. Find out the average forces exerted on (a) car that hits a line of water barrels and takes 1.8 to stop, and (b) car that hits a concrete barrier an..
What is velocity of wind that is moving the plane
The wind blows with a force of 425N north on a sail boat, while the water exerts a force of 325N west on the sailboat. Find out the magnitude and direction of the net external force on the sailboat.
What is change in the car's kinetic energy KEf - KEo from A to B. How fast will the father be moving.
Find out the magnitude of angular acceleration of the wheel
What are the displacement and velocity of the point on the cord. What is the magnitude of the acceleration of one of the liners toward the other because of their mutual gravitational attraction.
The parallel metal plate of a capacitor is separated by a distance of 0.5cm and is connected to a 90v battery. Discover an electric field between them and the surface charge density .
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