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3 years ago

7

6. If two objects each have a mass of 10 kg, then the force of gravity between them

1 answer:

frozen [14]3 years ago

8 0

Answer:

3

Explanation:

Answer is what its supposed to be. lol.

Stick with it brother. You GOT THIS!!! 100%

b.

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3 years ago

Read 2 more answers

A hydraulic press has one piston of diameter 4.0 cm and the other piston of diameter 8.0 cm. What force must be applied to the s

yan [13]

Answer:

The force is $F_1 = 400.8 \ N$

Explanation:

From the question we are told that

The first diameter is $d_1 = 4.0 \ cm = 0.04 \ m$

The second diameter is $d_2 = 8.0 \ cm = 0.08 \ m$

Generally the first area is

$A_1 = \pi * \frac{d^2_1 }{4}$

=> $A_1 = 3.142 * \frac{0.04^2}{4}$

=> $A_1 = 0.00126 \ m^2$

The second area is

$A_2 = \pi * \frac{d^2_2 }{4}$

$A_2 = 3.142 * \frac{0.08^2}{4}$

$A_2 = 0.00503 \ m^2$

For a hydraulic press the pressure at both end must be equal .

Generally pressure is mathematically represented as

$P = \frac{F}{A}$

=>

$\frac{F_1}{A_1 } = \frac{F_2}{A_2 }$

=> $F_1 = \frac{1600}{0.00503} * 0.00126$

=> $F_1 = 400.8 \ N$

8 0

3 years ago

A person walks in the following pattern: 3.1 km north, then 2.4 km west, and finally 5.2 km south. a) Sketch the vector diagram

zysi [14]

Answer:

$d = 3.19 km$

direction is given as

$\theta = 41.2 degree$ South of West

Explanation:

Part b)

displacement is given as

$d_1 = 3.1 \hat j$

$d_2 = 2.4 \hat i$

$d_3 = 5.2(-\hat j)$

now we will have

$d = d_1 + d_2 + d_3$

$d = 2.4 \hat i + (3.1 - 5.2)\hat j$

$d = 2.4 \hat i - 2.1 \hat j$

total displacement is given as

$d = \sqrt{2.4^2 + 2.1^2}$

$d = 3.19 km$

direction is given as

$tan\theta = \frac{-2.1}{2.4}$

$\theta = 41.2 degree$ South of West

3 0

4 years ago