Recall the equation relating an object's change in thermal energy to its change in temperature:
ΔQ = mcΔT
ΔQ is the change in thermal energy.
m is the mass of the object.
c is the object's specific heat.
ΔT is the object's change in temperature.
Given values:
m = 0.5 kg = 500g
ΔT = (7-0)⁰C = 7°C
Online sources say the specific heat of silver is 0.240 J/g⁰C
Substitute the terms in the equation with the given values and solve for ΔQ:
ΔQ = 500×0.240×7
<h3>ΔQ = 840 J</h3>
<h2>
Tension in tow line is 2000 N</h2>
Explanation:
Power is the ratio of work and time.
Work = Force x Displacement
W = F x d
Here force is tension, T
So
W = T x d
Substituting
We have
Power, P = 30kW = 30000 W
Velocity, v = 15 m/s
Substituting
30000 = T x 15
Tension, T = 2000 N
Tension in tow line, T = 2000 N
They would float away!! And most likely go into orbit (plz mark Brainliest)
The key variable that different the two type of jumps is direction of motion.
<h3>
High Jump</h3>
A high jump involves vertical upward upward motion that is limited by gravity.
The maximum height reached during a high jump is given as;
H = vt - ¹/₂gt²
<h3>Long Jump</h3>
A long jump involves horizontal distance that is not affected by gravity.
The horizontal distance traveled during a long jump is given as;
H = vt
Thus, the key variable that different the two type of jumps is direction of motion.
Learn more about direction of motion here: brainly.com/question/1674237
Answer:
One when it enters the glass slab from air and second time when it enters the air through glass slab. When light rays travelling through air enters glass slab, they get refracted and bend towards the normal. Now the direction of refracted ray changes again when it comes out of the glass slab into air.