Answer:
Energy required = 3169.34 Joules.
Explanation:
The quantity of energy (Q) required can be determined by;
Q = mcΔθ
Where: m is the mass, c is the specific heat and Δθ is the change in temperature.
But, m = 96.7 kg, c = 0.874 J/(kg
),
=
and
=
.
So that,
Q = mc(
-
)
= 96.7 x 0.874 x (
-
)
= 96.7 x 0.874 x 37.5
= 3169.3425
Q = 3169.34
= 3.2 KJ
The amount of energy required is 3169.34 Joules.
there will no resultant force
Explanation:
this is because if the forces are balanced on opposite direction. then they cancel each other out
5 newton's ---------> <--------- 5 newton's
then both forces will cancel each other out as a result there is no resultant force and the newton's laws states that if there is no resultant the object will continue in its state of rest (remains there) or it will in continue in its uniform motion in a straight line.
I hope you understand,
True. Electromagnetic energy does not require a medium.
Answer:
Procyon appears brighter in the sky
Explanation:
Apparent magnitude of star Antares = 1.0
Apparent magnitude of star Procyon = 0.4
Pogson's Ratio
m₂-m₁ = -2.50 log(B₂/B₁)
where, m is the apparent magnitude
B = Brightness of star or flux coming towards us (W/m²)
∴Larger magnitudes correspond to fainter stars so here 1>0.4 which means Antares appears dimmer and Procyon appears brighter.