Dependent variable.......
Answer:
2.23 m/s²
Explanation:
mass of sail boat, m = 20600 kg
Force along east, F1 = 17700 N
Force along north west, F2 = 60000 N
write the forces in vector form
Net force acting on the boat
The magnitude of net force is given by
F = 45922 N
Acceleration = force / mass
a = 45922 / 20600
a = 2.23 m/s²
Answer:
4 kg m/s
Explanation:
According to the Law of Conservation of Momentum, the total momentum must be the same before and after a collision. The total momentum before the bat hit the ball was 12 kg m/s. After the collision, the ball has a momentum of 8 kg m/s. Therefore, the bat must have a momentum of 4 kg m/s.
Answer :
Average acceleration,
Average velocity, v = 13 km/h
Explanation:
It is given that,
Initial velocity of ship, v = 26 Km/h
Final velocity of ship, u = 0
Distance covered by ship, d = 5 km
Time taken, t = 22 min = 0.36 h
(a) Average acceleration,
So, the magnitude of ship's acceleration is .
(b) Average velocity,
So, ship's average velocity is 13 km/h.
Hence, this is the required solution.
B. Mercury, Jupiter, Saturn, and Mars.
C. Mercury, Venus, Jupiter, and Mars.
D. Mercury, Venus, Earth, and Mars
B. a thick wire
C. a solar cell
D. a generator
Answer: The correct answer is a thick wire.
Explanation:
In the given options of the problem, a car battery is needed to generate an electrical current. It forces the electrons to flow. It makes the current flow in the circuit.
Solar cell is a device which converts the solar energy into the electrical energy. It can increase the voltage and generate an electrical current.
Generator is a device which converts the mechanical energy into the electrical energy. It can increase the voltage and generate an electrical current.
A thick wire is not used to increase voltage and generate an electrical current. The thick wire has low resistance in comparison to the thin wire.
Therefore, the correct option is (B).