Answer:
<em>Two</em><em> </em><em>sides</em><em> </em><em>and</em><em> </em><em>angle</em><em> </em><em>between</em><em> </em><em>them</em><em> </em><em>is</em><em> </em><em>given</em><em> </em>
Answer:
0.91 g/cm³
Explanation:
Density: This can be defined as the ratio of mass of an object to its volume.
The mathematical expression for density is given as,
D = m/v .............................. Equation 1
Where D = Density of the ice cube, m = mass of the ice cube, v = volume of the ice cube.
v = l³
Where l = length of each side of the cube.
l = 1.38 in = (1.38×2.54) cm = 3.51 cm
v = 3.51³
v = 43.24 cm³
Given: m = 1.39 oz = (1.39×28.35) g = 39.41 g
Substitute into equation 1
D = 39.41/43.24
D = 0.91 g/cm³
Hence the density of the ice cube = 0.91 g/cm³
Answer:
F=2.589×10⁻⁷ Newtons
Explanation:
The gravitational force of attraction between two bodies is given by
F= Gm₁m₂/r²
Where m₁ and m₂ are the masses of the two bodies, G is the universal gravitational constant while r is the distance between the two bodies.
G=6.67408 × 10⁻¹¹m³kg⁻¹s⁻²
r=1.15m
m₁=75.0kg
m₂=68.4kg
Therefore F= (6.67408×10⁻¹¹m³kg⁻¹s⁻²×75.0kg×68.4kg)/(1.15m)²
F=2.589×10⁻⁷ Newtons
The correct answer is:
sixteen times
In fact, the distance between charge q and the source S is 1 unit. Instead, the distance between charge p and the source S is 4 units. The magnitude of the electrostatic force is inversely proportional to the square of the distance between the charge and the source:
where r is the distance. If we take the force between q and S as reference, we have r=1, so that
while the force between p and S is
Therefore, we see that the force exerted between q and S is 16 times the force exerted between p and S.
