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There is an oil tank that has a rectangular base of dimensions 2.4 m by 1.5 m. The tank is filled with oil of density 850 kg / m3 to a depth of 1.5 m. What is the mass of the oil?

2.4 1.5 1.5*850=4590kg
RJ
Answered by Rajiv J. • Physics tutor
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Discuss a use and a harmful effect for three parts of the electromagnetic spectrum

Gamma rays can be used to sterilise medical instruments, however, they can cause cancer.Ultraviolet waves can be used for security on bank notes, however, they can cause sunburn and blindness.Microwaves can ...
OE
Answered by Oliver E. • Physics tutor
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What are the two types of waves and what are some of their uses/sources?

Transverse: Radio signalsElectromagnetic radiationTVPhone serviceOcean waves Longitudinal: Seismic wavesSound wavesect.
Answered by • Physics tutor
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If Max weighed 17.2 N on Ceres (gravitational field strength of 0.27 N/kg), then what would she weigh on Earth. Give your answer to 3 s.f. and state your units.

For this question you only need to know one equation, however, what is key is to be able to understand what the question is asking for and how to go about it.Weight is the force applied to a body due to the ...
SJ
Answered by Shafaan J. • Physics tutor
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A satellite is in orbit of the Earth, and moves at a constant orbital speed of 3055.5m/s. If it is at an altitude of 35786km, calculate the time period for a complete cycle, giving your answer in hours. Answer should be given in in 3 significant figures.

Orbital Speed = [2Π(Orbital Radius)]/Time Period 3055.5m/s = 10999.8km/h therefore: 10999.8km/h = [2Π(35786km)]/TT = [2Π(35786km)]/(10999.8km/h)T = 20.4 hours
Answered by • Physics tutor
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