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In a doppler shift why does a moving source show no increase in speed of the mechanical waves emitted?

I'll first ask the student to explain the difference between a moving source and moving observer, prompting them until they get something like this(asking them to draw a diagram if needed)- When the observer...
JG
Answered by James G. • Physics tutor
2434 Views

What is the difference between acceleration, speed and velocity?

Speed is the rate of change of distance(basically how much distance(m) has been covered in a particular time(s)). Velocity is the rate of change of displacement( change of distance in a particular direction ...
AA
Answered by Ayusha A. • Physics tutor
161193 Views

What does a velocity-time graph represent?

The first step in answering any question is to figure out what the question really means! Velocity is a term physicists use to describe not just speed, but speed in a particular direction. When we talk about...
IS
Answered by Iman S. • Physics tutor
21713 Views

State one advantage and one disadvantage of using a CT scanner, compared with ultrasound scanning, for forming images of the inside of the human body. (2 Marks)

Advantage- Computeried Tomography provides an image with greater resolution than ultrasound. (1 mark) It also produces a 3D image made from lots of individual slices which can be viewed from various differen...
TC
Answered by Tate C. • Physics tutor
11474 Views

The cyclist used the brakes to slow down and stop the bicycle. A constant braking force of 140 N stopped the bicycle in a distance of 24 m. Calculate the work done by the braking force to stop the bicycle. Give the unit. (3 Marks)

Work done= force x distance.Here we are told that the force is 140N. The braking distance of the bike is 24m. Therefore, work done is 140 x 24=3360 (2 marks) Joules.(1 mark)The units of work done are Joules....
TC
Answered by Tate C. • Physics tutor
12954 Views