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A star is formed from a nebulae, which is a cloud of dust and gas. The dust and gas particles are drawn together by the gravitational attraction between them. As the nebulae contracts, the dust and gas pa...
KE = 1/2mv^2m = 588/9.8 = 60 kgv = 8 miles/hr = 3.56 m/sKE = 379 JP = E/tt = d/v = 10m/3.56m/s = 2.81 sP = 135 W
Answer: Most of the atom's mass must be concentrated in a small area at the centre of the atom. This is known as the nucleus.
Power is the rate at which energy is transferred. For example, a typical kettle may use 1.2 kiloWatts (kW) for about 2 minutes to boil water. This means that the kettle uses 1200 Joules of energy per seco...
Free fall == only gravity actingUse one of the SUVAT equations: s = ut + 0.5at2s=35m, u=0 (starts at rest), a=g=9.81ms-2 (gravitational constant), t=?Through rearranging: t=(2s/a)CAAnswered by Charlotte A. • Physics tutor1802 Views
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