Answer:
No
Explanation:
Acceleration = Velocity/Time
An example of where the velocity would be different is:
Acceleration = (automobile 1)
Acceleration = (automobile 2)
As you can see, the velocity for the first automobile is 10 m/s while the second one has a velocity of 25 m/s (with a greater time travelled) and both resulted in the same acceleration of 5 m/s².
Its a chemical change. Think of it in a way of being able to change it back to its original state. You cant change something back to its original state if its a chemical change. You can however turn something back to its original state when it under goes a physical change.
Answer:A generator is the appropriate device to be used.
Explanation:
A generator is a device which transforms mechanical energy to electrical energy.
The different parts of a generator includes:
- Engine, alternator, fuel system, voltage regulator, lubricating system, cooling and exhaust system, Battery charger and control panel.
The generator works on the principle of electromagnetic induction which states that
that the above flow of electric charges could be induced by moving an electrical conductor, such as a wire that contains electric charges, in a magnetic field. This movement creates a voltage difference between the two ends of the wire or electrical conductor, which in turn causes the electric charges to flow, thus generating electric current.
Therefore, the use of a generator is the best device for the campers to provide electrical power source for their heaters and light in the cabin.
Explanation:
The magnitude of centripetal acceleration is:
a = v² / r
The velocity is:
v = d/t
v = 2 × 2π (5 m) / 60 s
v = 1.05 m/s
a = (1.05 m/s)² / (5 m)
a = 0.219 m/s²
The direction is towards the center. So at point A, the centripetal acceleration is 0.219 m/s² downward, and at point B, the centripetal acceleration is 0.219 m/s² upward.
Answer:
= 19.32 m/s and = 27.32 m/s
Explanation:
The kinetic energy has as formula
K = ½ m v²
Where m is the mass and v the speed of the body.
If the policeman calculates the kinetic energy, let's clear the speed
v = √ 2K/m
Let's reduce the units to the SI system
K = 16.32 KJ (1000 J / kJ) = 16.32 10³ J
Let's calculate
v = RA (2 16.32 10 3/60)
v = 23.32 m / s
The rider at 14.4 km/h, reduce
= 14.4 km / h (1000m / 1km) (1h / 3600s) = 4.00 m / s
We already have the relative speed of the two (rider and police car) which is 23.32, we also have the rider speed 4.0 m / s, let's calculate the possible police speeds
These two speeds come from going in the same direction or in opposite directions
= ±
= - vj
= 23.32 - 4
= 19.32 m/s
= + vj
= 23.32 +4
= 27.32 m/s