Ask question

Ask question

All categories

3 years ago

9

A............... pulley helps us by changing the direction of the applied effort

2 answers:

DerKrebs [107]3 years ago

8 0

Explanation:

Malai thaxai. na

ffndgufijvdyfbffnfcjoigkf

garik1379 [7]3 years ago

8 0

Answer/Explanation:

True

A fixed pulley changes the direction of the force you exert by pulling, so you can pull down to move an object up. In this fixed pulley system, you pull down on one side of the rope and the other side goes up. You use the same amount of force to pull down as you would to lift the toy yourself.

You might be interested in

True or false: the most appropriate weights to use in the wacc are book value weights.

Veseljchak [2.6K]

This statement is false as the most appropriate weights to use in the wacc are market value weights.

The weighted average cost of capital (WACC) is the amount that a company anticipates charging on average to all of the holders of its securities in order to fund its assets (WACC).

Each capital source's cost (debt and equity) is multiplied by the appropriate weight by market value when computing WACC, and the results are then added up to arrive at the final calculation.

It matters that the external market, not management, is in charge.

The WACC is the rate of return a company must get on its base of existing assets to appease its owners, creditors, and other financiers; otherwise, they will hunt for alternative investments.

Learn more about WACC here brainly.com/question/25566972

#SPJ4

8 0

1 year ago

The stored energy an object has due to its MOTION system transformation

jekas [21]

Answer:A

Explanation:

Kinetic energy is energy caused by motion.a body in motion possess kinetic energy

3 0

3 years ago

Find the self-inductance of a 1700-turn solenoid 55 cm long and 4.0 cm in diameter. Express your answer with the appropriate uni

Nitella [24]

The self-inductance of the solenoid is 8.25 mH.

The given parameters;

<em>number of turns, N = 1700 turn</em>
<em>length of the solenoid, l = 55 cm = 0.55 m</em>
<em>diameter of solenoid, d = 4 cm</em>
<em>radius of the solenoid, r = 2 cm = 0.02 m</em>

<em />

The area of the solenoid is calculated as follows;

$A = \pi r^2\\\\A = \pi \times (0.02)^2\\\\A = 0.00125 \ m^2$

The self-inductance of the solenoid is calculated as follows;

$L = \frac{\mu_o N^2 A }{l} \\\\L = \frac{(4\pi \times 10^{-7}) \times 1700^2 \times 0.00125}{0.55} \\\\L = 0.00825 \ H\\\\L = 8.25\ mH$

Thus, the self-inductance of the solenoid is 8.25 mH.

Learn more here:brainly.com/question/15612168

4 0

3 years ago

The body falls in a free fall 11s.Calculate: a) from what height the body of the paddle) what path did it fall during the last s

JulsSmile [24]

Answer:

a) h = 593.50 m

b) h₁₁ = 103 m

c) vf = 107.91 m/s

Explanation:

a)

We will use second equation of motion to find the height:

$h = v_{i}t + (\frac{1}{2})gt^2$

where,

h = height = ?

vi = initial speed = 0 m/s

t = time taken = 11 s

g = 9.81 /s²

Therefore,

$h = (0\ m/s)(11\ s) + (\frac{1}{2})(9.8\ m/s^2)(11\ s)^2\\\\$

<u>h = 593.50 m</u>

b)

For the distance travelled in last second, we first need to find velocity at 10th second by using first equation of motion:

$v_{f} = v_{i} + gt$

where,

vf = final velocity at tenth second = v₁₀ = ?

t = 10 s

vi = 0 m/s

Therefore,

$v_{10} = 0\ m/s + (9.81\ m/s^2)(10\ s)\\\\v_{10} = 98.1\ m/s$

Now, we use the 2nd equation of motion between 10 and 11 seconds to find the height covered during last second:

$h = v_{i}t + (\frac{1}{2})gt^2$

where,

h = height covered during last second = h₁₁ = ?

vi = v₁₀ = 98.1 m/s

t = 1 s

Therefore,

$h_{11} = (98.1\ m/s)(1\ s) + (\frac{1}{2})(9.8\ m/s^2)(1\ s)^2\\\\$

<u>h₁₁ = 103 m</u>

c)

Now, we use first equation of motion for complete motion:

$v_{f} = v_{i} + gt$

where,

vf = final velocity at tenth second = ?

t = 11 s

vi = 0 m/s

Therefore,

$v_{f} = 0\ m/s + (9.81\ m/s^2)(11\ s)$

<u>vf = 107.91 m/s</u>

8 0

3 years ago

Which planet, when viewed through a telescope, appears as a reddish ball interrupted by some permanent dark regions that change

Andrej [43]

The answer should be Mars.

4 0

4 years ago

Read 2 more answers