Answer:
Part A: 16.1 V
Part B: 20.5 V
Part C: 21.5%
Explanation:
The voltmeter is in parallel with the 4.5-kΩ resistor and the combination is in series with the 6.5-kΩ resistor. The equivalent resistance of the parallel combination is given as
Part A
The voltmeter reading is the potential difference across the parallel combination. This is found by using the voltage-divider rule.
Part B
Without the voltmeter, the potential difference across the 4.5-kΩ resistor is found using the same rule as above:
Part C
The error in % is given by
Answer:
52 N
Explanation:
Given:
Work done= 1820 J, distance= 35 meters Force = ?
Formula for work done
W = F • d
Find F.
F = W / d
Substitute the given into the equation.
F = 1820 J / 35 m
= 52 N
Answer:
Answer:
77.58°
Explanation:
Let the projectile is projected at an angle θ and the velocity of projection is u.
At the maximum height, the projectile has only horizontal component of velocity.
Let the velocity at maximum height is v.
According to the question, the velocity at maximum height is 21.5% of initial velocity.
v = 21.5 % of u
u Cos θ = 21.5 % of u
u Cos θ = 0.215 u
Cos θ = 0.215
θ = 77.58°
Thus, the angle of projection is 77.58°.
Explanation: