Yes because we have day and night and seasons
Answer:
70.035nN
Explanation:
M₁ = 7.0kg
m₂ = 1.5kg
r = 0.1m
G = 6.67*10⁻¹¹ Nm²/kg
Gravitational force (F) of an object is directly proportional to the product masses and inversely proportional to the square of their distance apart.
F = GM₁M₂ / r²
F = (6.67*10^-11 * 7.0 * 1.5) / (0.1)²
F = 7.0035*10^-10 / 0.01
F = 7.0035 * 10^-8 N
F = 70.035nN
The gravitational force acting on the bowling ball is 70.035nN.
Density can be calculated using the following rule:
Density = mass/volume
We are given that:
mass = 41 grams
volume = 5 cm^3
Substitute with the givens in the above equation to get the density as follows:
Density = 41/5 = 8.2 g/cm^3
Based on the above calculations:
answer : 8.2
units : g/cm^3
Mechanical waves require matter to travel medium. If there is no substance or matter to travel through, mechanical waves cannot propagate.
Since space is mostly vacuum, there is no medium for waves to travel through: waves sent by the sun (electromagnetic waves) are not mechanical waves
Answer:
1 m/s² down
Explanation:
"Calculate the acceleration of the elevator, and find the direction of acceleration."
Sum of forces in the +y direction:
∑F = ma
N − mg = ma
0.9 mg − mg = ma
-0.1 mg = ma
a = -0.1 g
a = -1 m/s²