Explanation:
The gravitational force between two masses having masses. Let m is the mass of smaller object and M is the mass of larger object. The gravitational force between these two spheres is given by :
r is the separation between two spheres
G is universal gravitational constant,
The value of G remains same always no matter how objects are placed.
The answer would be A) True.
Explanation:
Momentum before = momentum after
m₁ u₁ + m₂ u₂ = m₁ v₁ + m₂ v₂
After she jumps on the skateboard, they have the same velocity, so v₁ = v₂ = v.
m₁ u₁ + m₂ u₂ = (m₁ + m₂) v
The skateboard is originally stationary, so u₂ = 0.
m₁ u₁ = (m₁ + m₂) v
Plugging in values and solving:
(80 kg) (2 m/s) = (80 kg + 2 kg) v
v = 1.95 m/s
Round as needed.
The metal's ability to conduct heat and become an evenly heated surface relatively quickly makes it useful for ironing. An uneven heat distribution is more likely to produce hot and cold patches, resulting in burnt clothes. Moreover, if the metal didn't conduct electricity well, the heating element would have to use more energy to produce the same amount of heat in the iron.