Answer:
The frictional force acted on mass, m = 7.5 kg
Explanation:
Given data,
The acceleration of the box, a = 2 m/s²
The force acting on the box, F = 15 N
The mass of the box, m = ?
The force is defined as the product of mass and acceleration.
F = m x a newton
Therefore,
m = F / a
= 15 / 2
= 7.5 kg
Hence, the frictional force acted on mass, m = 7.5 kg
The speed of light in a material is given by:
where
is the speed of light in vacuum
n is the refractive index of the material
The lens in this problem has a refractive index of n=1.50, therefore the speed of light in the lens is
And the correct answer is C).
Answer:
Inductor.
Explanation:
it is given that, the voltage across the device leads the voltage across a resistor at 500 Hz. The device that has unknown circuitry can be a inductor. For LC circuit, the voltage across the inductor leads the voltage across resistor. So, the device can be a inductor.
Answer:
Looks like A but I'm not sure.
Explanation:
dont take my word for it I might be wrong