Potential energy = (weight) x (height)
After the car has been raised 2.5 meters, it has
(11,000) x (2.5) = 27,500 Joules
MORE potential energy than it had before it was lifted.
That's the energy that has to come from the work you do to lift it.
Since no mechanical process is ever 100% efficient, the work required
to accomplish this task is <em>at least 27,500 joules</em>.
KE = 1/2 * m* v^2
= 1/2 * 40 * 225
= 4500 J
hope it helped
T = 2*V₀*sin (α) / g
t = 2*1770*sin (26.3°) / 9.8 ≈ 2*1770*0.443 / 9.8 ≈ 160 s or 2.7 min
Answer:
0.000311 m³
Explanation:
The formula that connect volume, mass and density is given below
D = m/v ...................... Equation 1
Where D = Density of the gold, m = mass of the gold, v = volume of the gold.
make v the subject of the equation
v = m/D .................. Equation 2
Given: m = 6 kg,
Note the density of pure gold = 19300 kg/m².
Substitute into equation 2
v = 6/19300
v = 0.000311 m³
Hence the volume that will verify that it's a pure gold = 0.000311 m³
In hydrosphere, the parameter surface temperatures does not change from low latitude to high.
Answer: Option B
<u>Explanation:</u>
Hydrosphere is made with all available water on earth, sea, planets and lakes. Its role is to sustain water various life and maintaining ecosystems. Water is present in high percentage on the earth's.
Comparing surface temperatures and lower temperatures in high latitude areas, lower sea surface temperatures found at high latitudes. In the deeper ocean, the water temperature is similar to the surface temperature, keeping the curve vertically. Hence, there is no rapid changes in the temperature with depth (remains constant).