Answer:
The answer is 312.5j
Explanation:
The kinetic energy (KE):
KE=1/2*m*v^2
M= mass of the object
v= velocity of the object
We have;
m=25g
v=5m/s
KE=1/2*25g*5^2m/s
KE =312.5j
<span>A firefighter’s protective clothing, referred to as a turnout coat, is typically constructed as an ensemble of three layers separated by air <u>gaps,</u> if that is the word you were looking for. Take a look at the photo attached below for reference. </span>
Answer:
r =
Explanation:
Let's apply the universal gravitation law to the body (c), we use the indications 1 for the planet and 2 for the moon
∑ F = 0
-F_{1c} + F_{2c} = 0
F_{1c} = F_{2c}
let's write the force equations
where d is the distance between the planet and the moon.
(d-r)² =
d² - 2rd + r² = \frac{m}{M} \ \ r^2
d² - 2rd + r² (1 - ) = 0
(1 - ) r² - 2d r + d² = 0
we solve the second degree equation
r = [2d ± ] / 2 (1- )
r = [2d ± 2d ] / 2d (1- )
r =
there are two points for which the gravitational force is zero
Answer:
Explanation:
Energy stored in a capacitor is given by the expression
E = Q² / 2C , where Q is charge on it and C is its capacitance . As we put dielectric slab between the plates , capacitance increases , Due to it energy decreases as capacitance form the denominator in the formula above and Q is constant .
Hence energy decreases.