That depends on the wavelength of the electromagnetic radiation.
-- If the waves are long, then we use them for radio, TV, and cellphones.
-- If the waves are shorter than that, then we use them for GPS in the car.
-- If the waves are shorter than that, then we use them to heat meatloaf
in the microwave oven.
-- If the waves are shorter than that, then they warm us and they
make our plants grow ... like the ones we eat.
-- If the waves are shorter than that, then our eyes use them to see with.
-- If the waves are shorter than that, then they tan our skin.
-- If the waves are shorter than that, then they can cause cancer on
our skin.
-- If the waves are shorter than that, then they can cause cancer and
other diseases in places inside our body.
Answer:
The resultant force on the boat is 5,000 N
Explanation:
Given;
the forward thrust on the boat, Ft = 35,000 N
water resistance on the boat, Fw = 20,000 N
Air resistance on the boat, Fa = 10,000 N
The forces opposing the boat motion will be negative, while the force pushing the boat forward will be positive
The resultant force on the boat, Fr = Ft - Fw - Fa
Fr = 35,000 N - 20,000 N - 10,000 N
Fr = 35,000 N - 30,000 N
Fr = 5,000 N
Therefore, the resultant force on the boat is 5,000 N
Wood, plastic, rubber and air are good insulators because they don’t have free electrons.
Answer:
Yes they can stop or bat the puck with their open hand
Explanation:
F = m . g = 76.5 x 9..8 = 749.7
Net Force = 3225 - 749.7 = 2475.3
F = m.a
2475.3 = 76.5 a
a = 32.35
V = at + v1
V = at + 0
V = 32.35 x 0.15
V = 4.8525
Hope this helps
