Answer: time; mass
Explanation:
The equation E=mc^2 shows that energy, e, and mass, m, are linked.
For objects moving in a straight line, the special theory of relativity applies to show that space and time are linked.
Answer:
False
Explanation:
The tension in the chain must be equal to the frictional force acting on the car, not to its weight.
In fact, we have 4 forces acting on the car
- Its weight: downward
- The normal reaction of the road on the car: upward --> this force balances the weight, so the net force along the vertical direction is zero
- The tension in the chain: forward
- The frictional force between the road's surface and the tires of the car: backward
We can consider the horizontal motion only: we are said that the car is moving at constant velocity, so the horizontal acceleration is zero. According to Newton's second law:

zero acceleration means that the resultant of the forces on the car is zero. But there are only 2 forces acting on the car in the horizontal direction: the tension in the chain (forward) and the frictional force (backward). Since their resultant must be zero, it means that the two forces must be equal and opposite: therefore, the tension in the chain must be equal to the frictional force.
<span>The waves with the lowest energy and lowest frequencies of the electromagnetic spectrum are the "Radio waves"
So, option B is your answer
Hope this helps!
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Answer:
The net force should be of a magnitude of 64 N
Explanation:
We use Newton's second Law for this:

which for our case gives:

Answer:
The position is
relative to the base of the ocean
Explanation:
From the question we are told that
The angle made by the incline with the horizontal is 
The constant acceleration is 
The distance covered is 
The height of the cliff is 
The velocity of the car is mathematically represented as

The initial velocity of the car is u= 0
So

substituting values


The vertical component of this velocity is

substituting values


The negative sign is because is moving in the negative direction of the y-axis
The horizontal component of this velocity is



Now according to equation of motion we have

substituting values

using quadratic equation we have that

given that time cannot be negative

The car’s position relative to the base of the cliff when the car lands in the ocean is mathematically evaluate as

substituting values

