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The mass of an atom is constituted mainly by:
(1) Neutron and neutrino
(2) Neutron and electron
(3) Neutron and proton
(4) Proton and electron
Ans: Neutron and proton
A force of 2.5kN is needed to lift a load. How much work is done if the load is lifted by 500cm? An electromagnet exerts a force of 12N and moves a soft iron armature by a dist
A helium atom is in a galaxy travelling at a speed of 4.89 x 10 6 m/s away from the Earth. An astronomer on Earth observes a frequency from the helium atom of 6.52 x 10 14 H
Q. A rubber ball is dropped to the floor. What force act on the ball to bounce? Does the Earth "bounce" too? Ans. The force of the Earth pushing back on the ball causes
Water at 10 Celsius flows at uniform velocity of 0.1 m/sec into a parallel plate channel, which is wide in the third direction. The parallel plates are at 20 Celsius and are 1.0 cm
1. Two trucks are connected by a rope. The rope is attached to a winch on one of the trucks so that the trucks are being pulled together slowly as the winch pulls in the rope. For
HOW CAN A PURE SPECRUM BE PRODUCED IN THE LABOLATORY
Pauli exclusion principle (W. Pauli; 1925) No two similar fermions in a system, like electrons in an atom, can have an equal set of quantum numbers.
How do i get physics homework help?
Charging by induction Charging by induction - object charged by second object without touching - objects have opposite charge
Some sample
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