4. It takes a car one minute to go from rest
to 30 m/s east. What is the acceleration of
this car

0.5m/s2

Explanation:

Data obtained from the question include:

u (initial velocity) = 0m/s

v (final velocity) = 30m/s

t (time) = 1min = 60secs

a (Acceleration) =?

a = v — u/t

a = 30—0 / 60

a = 30/60

a = 0.5m/s2

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

: )