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An airplane accelerates steadily from rest to 355 m/s, after travelling a distance of 105,000 m. How long, in minutes, does it take the airplane to reach this speed?

The first step is to identify which components of the ‘SUVAT equations of motion’ the question gives us. Here we have the initial ( u ) and final ( v ) speeds, the distance ( s ) and we are trying to calcula...
RT
Answered by Rachael T. • Physics tutor
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Describe the process of beta-minus decay. What happens to the mass number and atomic number when alpha, beta, and gamma decay occurs?

In beta-minus decay, a neutron decays into a proton plus an electron. For alpha decay, the mass number decreases by 4 and the atomic number decreases by 2. For beta-minus decay, the mass number remains the s...
IC
Answered by Isabelle C. • Physics tutor
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What types of radiation are there?

When the nucleus of an atom is unstable, it occasionally emits either waves or particles to stabilise itself. The three types of radiation are: Alpha particles, Beta particles and Gamma waves. Alpha particle...
DW
Answered by Daniel W. • Physics tutor
2724 Views

The time taken for a wave to pass a point is 2.5 seconds. What is the frequency of the wave?

For this, we need to use the equation F = 1/T (where F = frequncy, and T = period). The period of this wave is the time taken for one whole wave to pass i.e. from one wave crest to the next wave crest. Here ...
FP
Answered by Fraser P. • Physics tutor
6551 Views

A speaker emits a sound wave through a metallic block, with a speed of 0.42 km/s, and a frequency of 16kHz. Calculate the wavelength to 3.s.f. Describe the characteristics of a longitudinal wave.

Firstly the values should be converted into more comfortable units. 0.42km/s = 420m/s, and 16kHz = 16,000Hz. Next, use the equation wavelength = speed/frequency This gives wavelength = 420m/s over 16,000/s =...
JB
Answered by Joseph B. • Physics tutor
4502 Views