Heat is transferred from hot temperatures to cold temperatures. The temperature of wet clothes is generally lower than the temperatures of our bodies, and so our body temperature lowers because of this hot to cold heat flow.
Answer: 1 hour
Explanation: Focus on the units; 70 miles per hour means that each hour, you will travel 70 miles
or you can use the equation time = distance/speed. You have 70miles/ 70mph = 1hour
I think the answer would be C. G<span>ravitational force is proportional to the square of the distance between the centers of both bodies. </span>
<h2>Impulse = Change in momentum = </h2><h2>Force x time = 32 kgms⁻¹</h2>
Explanation:
IMPULSE :
A large force acting for a short time to produce a finite change in momentum is called an impulsive force. It is defined as the product of the force and the time for which it acts and is equal to the total change in momentum.
we have F = 80 N
t = 0.4 s
Impulse = change in momentum = Force X time duration
= 80N x 0.4s = 32 kgms⁻¹
The frequency of a wave is equal to the linear speed divided the wavelength. so in equation form.
f = v / l
so the wavlength
l = v / f
where f is the frequency
v iss the linear speed
l is the wavelength
l = ( 5100 m/s ) / ( 2.2 Mhz ) ( 10^6 hz / 1 Mhz )
f = 0.0023 m
f = 2.3 mm