Two men pushing a stalled car generate a net force of +690Nfor
1 answer:
Answer:
The final momentum of the car is 4554 kg m/s.
Explanation:
Given that,
F = 690 N
Time = 6.6 sec
Momentum :
The momentum is the product of the force and change of time.
We need to calculate the final momentum
Using formula of momentum
Where, F = force
t = time
Put the value into the formula
Hence, The final momentum of the car is 4554 kg m/s.
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Answer:
B = 7.6 T direction of + x
Explanation:
For the proton beam to continue in the same direction the electric and magnetic forces must be equal
= 0
= F_{e}
Fm = q E
The electric force is in the direction of the electric field because it is the charge of the positive proton, the electric force goes in the direction of –y, therefore, the magnetic force cancels this force must go in the direction of + y
The magnetic force is
F_{m} = q v x B = q v B sin θ
θ = 90
B = q E / q v
B = E / v
B = 800/105
B = 7.6 T
To find the direction of the magnetic field we use the right hand rule, the thumb goes in the direction of the proton velocity, the fingers extended in the direction of the magnetic field and the palm is the direction of force, for a positive charge.
Thumb goes in the direction of the + z axis
Palm in the direction of +y
Fingers point in the direction of + x