Answer:
50 N
4.2 N
Explanation:
i) The force needed to balance the boom is 2400 N. If the weight of the counterbalance is 2350 N, then the downward force the park attendant must apply is 50 N.
ii) When the boom is resting on the end support, the normal force is:
∑τ = Iα
-W (0.50) + F (3.0) − N (6.0) = 0
-0.50 W + 3.0 F = 6.0 N
N = (-0.50 W + 3.0 F) / 6.0
N = (-0.50 × 2350 + 3.0 × 400) / 6.0
N ≈ 4.2
Answer: The three causes of demand elasticity are measured by looking at the relative change in demand as it responds to a change in price. How does the total expenditures test help determine demand elasticity? By finding out what the total expenditures are for a product, a business is able to determine the demand elasticity.
Answer:
power is the measure of strength
PART A)
Equivalent resistance in parallel is given as
now we have
PART B)
since potential difference across all resistance will remain same as all are in parallel
so here we can use ohm's law
for 4 ohm resistance we have
PART C)
since potential difference across all resistance will remain same as all are in parallel
so here we can use ohm's law
for 8 ohm resistance we have
