Answer:
It will feel 4.85% lighter.
Explanation:
Normal weight of the gold bar = 5.0 × 9.81 = 49.05 N
The weight of the gold bar would be reduced because of the buoyant force acting upwards.
weight of the gold bar under water = normal weight - weight of the water displaced by the gold bar.
first, we need to find the volume (V) of the gold bar.
Percentage of decrease in weight
The wave takes 11.3 s to cover a distance of 26.5 m, so its speed is:
The distance between two consecutive crests is 3 m, and this corresponds to the wavelength of the wave. To find its frequency, we can use the relationship between the speed v, the wavelength
and the frequency f:
C is the answer to the first one
The correct answer would be the last option. It is a plasma tail that is created when the ice of a comet start to melt into gases. As the comet is near to the sun, it melts containing dust, rock and ice that are in the gas phase. They are being ionized by the photons from the sun.
Answer:
2 Joules
Explanation:
Kinetic Energy = 1/2 of (Mass x Velocity^2)