Answer:d
Explanation:
It is good to extend your bare hand forward when you are getting ready to catch a fast-moving ball so you can pull your hand back, increasing the time to slow the ball thus decreasing the force.
While catching impulse is being transferred to hands imparting great force, lowering hand would increase the time so that average force decreases and chances to drop the ball also decreases.
Answer: <em><u>A</u></em><em><u>. The current in a 60-Watt bulb plugged into a 120-Volt outlet is 0.5 A. </u></em>
<em><u>I = P / V = (60 W) / (120 V) = 0.5 A</u></em>
<h3>
<u>For each problem, use the P = V • I equation to solve for the unknown quantity. In a, b, and e, the unknown quantity is current (I); and in c and d, the unknown quantity is power (P).</u></h3>
Other answers:
b. The current in a 120-Watt bulb plugged into a 120-Volt outlet is 1.0 A.
I = P / V = (120 W) / (120 V) = 1.0 A
c. The power of a saw that draws 12 amps of current when plugged into a 120-Volt outlet is 1440 W.
P = V • I = (120 V) • (12 A) = 1440 W
d. The power of a toaster that draws 6 amps of current when plugged into a 120-Volt outlet is 720 W.
P = V • I = (120 V) • (6 A) = 720 W
e. The current in a 1000-Watt microwave when plugged into a 120-Volt outlet is 8.3 A.
I = P / V = (1000 W) / (120 V) = 8.3 A
Answer:
building footprint is 21000 sf
Explanation:
given data
floors = 8
total square footage = 168000 sf
to find out
building footprint
solution
we know building footprint is area where building built up same as perimeter of any building plan
so here
we have calculate here total perimeter
building footprint = ........1
put here value
here all floor are equal
building footprint =
building footprint = 21000 sf
so building footprint is 21000 sf
The answer might be C ? hope it's right
Explanation:
Given that,
Mass of a ball, m = 250 g = 0.25 kg
Initial velocity of the ball, u = 6 m/s
Final velocity of the ball, v = -9 m/s
(a) Impulse of the system is given by :
Impulse = change in momentum
J = m(v-u)
J = 0.25(-9-6)
= -3.75 kg-m/s
(b) Impulse = Ft
If t = 0.5 min = 30 s
So,
So, impulse of the system is -3.75 kg-m/s and the force is -0.125 N.