Which are characteristics of electromagnetic waves? Check all that apply.
.
Waves with a higher frequency have a shorter wavelength.
They all move at the same speed.
They can travel through space.
Answer:
The total charge that can be delivered is 1044000 Coulombs
Explanation:
As we know that current I flowing given by:
I=Δq/Δt
Where Δq is charge moving
Δt is time
So
Δq=IΔt
Δq=290A×1 hour
Δq=290A×3600s
Δq=1044000 Coulombs
The total charge that can be delivered is 1044000 Coulombs
Answer:
245.25 Newtons
Explanation:
the gravitational force of the earth is 9.81 N/Kg
And so to work this out you would multiply 25 by 9.81 to give you 245.25
Answer:
the gravitational pull is stronger the closer the object is to the magnet but gets weaker as you move the object away from the magnet
Explanation:
if you hold a magnet right over a nail it immediately shoot up onto the magnet
were as if you hold it at a distance it will move but not as fast
Answer:
66.42 N
Explanation:
Torque is defined as the product of force and the perpendicular distance.
Where, r be the distance, f be the force and θ be the angle between the force vector and the distance vector
Case I :
F = 53 N, r = 28 cm = 0.28 m, θ = 90°
So,
case II :
F = ?, r = 0.28 m, θ = 53°
Let the force be F for the same toque.
F = 66.42 N
Thus, the force required is 66.42 N.