B, only when a nonzero net force is applied, this means that the force is unbalanced, an object in motion stays in motion unless acted upon by an unbalanced force.
Resistance can be obtained by the following formula:
R = <span>ρ (L/A)
where:
R = resistance
</span>ρ = resistivity of copper (<span>1.68<span>x10^-8</span></span>)
L = Length = 3.1m
A = cross-sectional area = pi * (d/2)^2 = pi * (1.7mm)^2 = 2.269 mm^2
R = (1.68x10^-8) (3.1 / 0.0000022698)
R = 0.0229 <span>Ω</span>
The effective temperature of a star is relative to the
fourth root of the luminosity and is contrariwise proportional to the square
root of the radius.
L = k R² T⁴
If the radius remains continuous, while the luminosity doubles, the temperature
must increase by a factor of the fourth root of two.
If L → 2L, then T → 1.189207115 T
So the answer is approximately 1.19 times.
Answer:
4. both blocks will both have the same amount of kinetic energy.
Explanation:
When the blocks are released free from the compression force, the spring exerts equal and opposite force on each block but the block with heavier (double) mass will attain slower ( half ) speed as compared to the lighter block according to the law of inertia. This works in synchronization to energy conservation.
Spring force is given as:
where: 
length of compression in the spring
<u>We know kinetic energy is given by:</u>
Hence the kinetic energy of both the blocks is equal when they are released to move free.
