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3 years ago

Si m1 es 6kg y m2 es 14kg y la masa de la polea es despreciable ¿Cual es la aceleración que adquiere el sistema?

Physics

1 answer:

Annette [7]3 years ago

8 0

Answer:

Please transilate

Explanation:

I didn't get it

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A horizontal force of 40N is needed to pull a 60kg box across the horizontal floor at which coefficient of friction between floo

Mazyrski [523]

Answer:

Coefficient of friction is $0.068$ .

Work done is $320~J$ .

Explanation:

Given:

Mass of the box ( $m$ ): $60$ kg

Force needed ( $F$ ): $40$ N

The formula to calculate the coefficient of friction between the floor and the box is given by

$F=\mu mg...................(1)$

Here, $\mu$ is the coefficient of friction and $g$ is the acceleration due to gravity.

Substitute $40$ N for $F$ , $60$ kg for $m$ and $9.80$ m/s² for $g$ into equation (1) and solve to calculate the value of the coefficient of friction.

$40 N=\mu\times60 kg\times9.80 m/s^{2} \\~~~~~\mu=\frac{40 N}{60 kg\times9.80 m/s^{2}}\\~~~~~~~=0.068$

The formula to calculate the work done in overcoming the friction is given by

$W=Fd..........................(2)$

Here, $W$ is the work done and $d$ is the distance travelled.

Substitute $40$ N for $F$ and $8 m$ for $d$ into equation (2) to calculate the work done.

$W=40~N\times8~m\\~~~~= 320~J$

8 0

3 years ago

I’m gym class you run 22m horizontal then climb a rope vertically for 4.8m. What is the direction angle of your total displaceme

Sliva [168]

The answer is: 12.30 degrees.

To solve this problem you must apply the proccedure shown below:

1. You run 22 meters horizontally and then you climb a rope vertically for 4.8 meters.

2. So. let's call the angle $\alpha$ , therefore, you must find it using $tan^{-1}$ , as following:

$tan^{-1}(\alpha)=\frac{opposite}{adjacent} \\opposite=4.8\\adjacent=22$

3. Substitute values and solve for the angle:

$tan^{-1}(\alpha)=\frac{4.8}{22}\\\alpha=12.30degrees$

5 0

3 years ago

The tendency for an object to sink or float has to do with the object's density.<br> True<br> False

Stella [2.4K]

Answer:

TRUE

Explanation:

BECAUSE AN OBJECTS DENSITY SHOWS HOW MUCH WEIGHT IS PER CUBIC UNIT. LIKE SAD HAS MORE DENSITY THAN WATER SO IT SINKS WHILE WOOD HAS LESS DENSITY THAN WATER SO IT FLOATS

4 0

3 years ago

Define the terms "Calorie" and "Joule"

Paraphin [41]

Answer:

A calorie is defined as the amount of energy needed to raise the temperature of one gram of water one degree Celsius.

Explanation:

The other unit used to measure heat is the joule. The joule is the SI (System International) unit

5 0

3 years ago

Letting a = red spheres and b = blue spheres, write a balanced equation for the reaction. express your answer as a chemical equa

GenaCL600 [577]

Knowing that the a and b represents red and blue spheres respectively.The chemical equation we could make isL5A2 + 5B --> 4A2B + A2 + B as shown in boxes
Simplifying this would make it:
4A2 + 4B --> 4A2B
Thus, reducing the coefficients, the final answer is:
A2 + B --> A2B

5 0

3 years ago

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