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What does "superimposition" mean?

Superimposition is when two transverse waves come together, and their frequencies cancel each other out. If the waves are completely superimposed, the resultant wave is 0.
SM
Answered by Sameer M. • Physics tutor
13406 Views

For a vehicule with a constant acceleration (5 m/s^2) starting at rest, how long would it take to travel 1 km?

as the acceleration is constant, to travel 1km=1000m, we use 1000 m =(1/2) (5 m/s^2) t^2, so t=sqrt(2 1000/5)=20 seconds
DR
Answered by David R. • Physics tutor
2651 Views

Is momentum a vector or a scalar quantity?

Momentum of an object is the product of its mass and velocity (p=m x v). Since mass is a scalar quantity and velocity is a vector quantity, we can derive that momentum must therefore be a vector quantity as ...
MN
Answered by Madeleine N. • Physics tutor
82525 Views

Describe (both quanititavely and qualitiatively) the energy changes of a ball of mass 0.5kg, dropped from a height of 10m and left to bounce. Make use of the law of conservation of energy.

At the drop height, the ball possesses 0J of Kinetic Energy (KE), and only possesses Gravitational Potential Energy(GPE). From GPE=mgh...GPE=O.5x9.91x10=49.05J. As it drops, its GPE decreases and its KE incr...
DM
Answered by David M. • Physics tutor
2375 Views

When a toothbrush is charging, p.d. across the primary coil is 230 V, p.d. across the secondary coil is 7.2 V. The primary coil in the charging base has 575 turns of wire on its coil. Find the number of turns on the secondary coil inside the toothbrush.

This question is on transformers. This is clear because there is a primary and secondary coil and a different voltage between the 2 coils. Transformers induce a changing voltage in a coil. The known equation...
JT
Answered by Jayani T. • Physics tutor
6107 Views