Top answers

Physics
All levels

Sophia (mass 47Kg) is travelling to the right with a velocity of 7.2m/s and ​Neesha (mass 68Kg) is travelling to the left with a velocity 4.8m/s. When ​they meet, they hold hands and travel off together. Give their final ​velocity and direction

We know that p=mv,

So Sophia travels at 7.2 m/s and she has a mass of 47kg so her p is: p=7.2 x 47=338.4 kgm/s

 Neesha travels with a velocity of -4.8 m/s and...

RL
Answered by Raquel L. Physics tutor
4015 Views

Why does water stay in the bucket if it is swung through a loop fast enough?

Water stays in the bucket for the same reasons that we stay in our seats when we do a loop on a rollercoaster. Another example is being driven round a roundabout and feeling a 'force' pushing you outwa...

BB
Answered by Bethany B. Physics tutor
8909 Views

A sound wave has a frequency of 500 Hz. The sound wave has a wavelength of 0.34 m in air. Calculate the speed of the sound wave in air?

As we know so far, c = f / λ. This equation comes from a much simpler version of speed = distance/ time. As the λ  (with units "m") can be seen as distance and the frequency (with units "...

RA
Answered by Reni A. Physics tutor
16685 Views

Define the term ultrasound wave

An ultrasound wave is a soundwave with a frequency higher than 20,000 Hz

RA
Answered by Reni A. Physics tutor
3905 Views

Insulating a home costs £2000 and saves £50 a year. What is the payback time?

40 years.

LT
Answered by Leo T. Physics tutor
3616 Views

We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning