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If newton's 3rd law is true how does anything move?

Newton's 3rd law, simply put, is every action has an equal and opposite reaction. This means when you push on an object the object experiences a force (from you) and the object exerts an equal force on you i...
RK
Answered by Roy K. • Physics tutor
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What is the difference between Speed, Velocity and Acceleration?

Speed and Velocity are both measures of distance travelled in a given time and are therefore calculated using Speed=Distance/Time.Speed is a scalar quantity which means that it is quantified by a magnitude o...
Answered by • Physics tutor
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pressure = 2.3 × 10^5 Pa temperature= 200K. At a constant volume, when the temperature increases to 300K what is the pressure in Pa?

Divide pressure by temperature to get the constant = 1150. Making sure all values are in the correct units.Then multiply by 300K to get the increased pressure. 3.45 x 10^5 Pa
RP
Answered by Rebecca P. • Physics tutor
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What is the Rutherford alpha scattering experiment and what does it tell us?

The Rutherford experiment allowed us to experimentally disprove older models of the atom, forming the basis of the evidence for the nuclear model of the atom. The atom at the time was believed to have been a...
AJ
Answered by Aneesh J. • Physics tutor
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Ultrasound is used to scan unborn babies but X-rays are not used to scan unborn babies.

Ultrasound is not ionising as it is a longitudinal wave whilst X-rays are ionising as they are transverse waves and have very high frequency hence can 'knock' electrons out of their orbit. Doing this can cau...
SA
Answered by Saram A. • Physics tutor
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