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What is the difference between current and voltage?

Current and voltage are closely related properties of a circuit, one is caused by the other. What we refer to as voltage is in reality just a difference in charges, so, a difference in the amount of electron...
BC
Answered by Brian C. • Physics tutor
3660 Views

Give two features of polar orbits. Suggest the use of a satellite in a polar orbit.

-They have a period of 24 hours -They lie above the equator A satellite in a polar orbit could be used for various things such as weather forecasting, GPS, to provide network services such as internet and mo...
ZM
Answered by Zahra M. • Physics tutor
7337 Views

What properties makes an object stable?

An object will be stable if the centre of mass, the point at which all of the mass of the object is concentrated, is lower to the ground. It will also be stable if there is a wide base. Objects with low cent...
EA
Answered by Edward A. • Physics tutor
13782 Views

A car accelerates (at a constant acceleration) from a velocity of 25m/s to 34m/s in 6s. Calculate the cars acceleration.

Acceleration is defined as A = change in velocity / time, For this example A = (34-25 )/ 6 = 9/6 = 1.5 m/s^2
SK
Answered by Sarah K. • Physics tutor
6624 Views

If a 30N force is applied to a stationary object of mass 10kg, at what speed will the object accelerate?

By taking the formula F=m*a, and rearranging the make a the subject, we get a=F/m. Then by substituting in the values given we can work out that a=30/10=3. The units of acceleration are ms -2 so hence, the o...
CM
Answered by Chris M. • Physics tutor
6721 Views