Answer:
false
Explanation:
the planet saturn rotates around the sun at 21,637mph
the planet mars rotates around the sun at 53,979mph
half the speed of mars is 26,989.5mph
If your choices are the following:
<span>
A faultblock mountain
A folded mountain
A hotspot volcano
A volcanic arc
</span>
Then the answer is A folded mountain. It is formed when an earthquake happened and this was the result of the movement of the plates.
Answer:
B. 24.2 m/s
Explanation:
Given;
mass of the roller coaster, m = 450 kg
height of the roller coaster, h = 30 m
The maximum potential energy of the roller coaster due to its height is given by;
Therefore, the maximum speed of the roller coaster is 24.2 m/s.
Answer:
kJ
Explanation:
= mass of 1 mole of water = 18 g
= given mass of water = 50 g
Number of moles of water in the given amount is given as
= Heat of fusion of water = 6.01 kJ/mol = 6010 J/mol
= specific heat of water = 75.3 J/mol
= Change in temperature = 22.0 °C
Amount of heat required is given as
J
kJ
Answer:
Explanation:
Let pressure at surface of earth be P Pa.
pressure at height of 8.1 km in air can be calculated as follows .
pressure due to column of air of 8.1 km height
= h d g , h is height , d is density of air and g is acceleration due to gravity
= 8.1 x 1000 x .87 x 9.8 = 6.9 x 10⁴ Pa .
pressure at the height of 8.1 km
= P - 6.9 x 10⁴ Pa
Pressure due to column of 16 m in the sea
= h d g
16 x 1000 x 9.8
= 15.68 x 10⁴ Pa .
Pressure at depth of 16m
= P + 15.68 x 10⁴
pressure difference between points at height of 8.1 km and pressure at point 16 m deep
= P + 15.68 x 10⁴ - P + 6.9 x 10⁴ Pa
= 22.58 x 10⁴ Pa .