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MatroZZZ [7]
3 years ago
5

HELP PLEASE!! GIVING BRAINLIEST!! If you answer this correctly ill answer some of your questions you have posted! (20pts)

Physics
2 answers:
anyanavicka [17]3 years ago
8 0

Explanation:

potential energy =360800J

mass(m)=?

height (h)=25m

g=9.8m/s²

we have

potential energy =360800J

mgh=360800J

m×9.8×25=360800

m=360800/(9.8×25)=1472.653061kg

Archy [21]3 years ago
8 0

Answer:

HELP PLEASE!! GIVING BRAINLIEST!! If you answer this correctly ill answer some of your questions you have posted!

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Force is a vector, while mass is a scalar. Why can we use mass as an indicator of the magnitude of the force vector?
adoni [48]

Answer:

Explanation:

Force = mass x acceleration

\overrightarrow{F}=m\overrightarrow{a}

Force is always vector and acceleration also vector but the mass is a saclar quanity.

here, the direction of force vector is same as the direction of acceleration vector but the magnitude of force depends on the magnitude of mass of the body.

Is mass is more, force is also more.

Thus, the mass is like an indicator of the magnitude of force.

8 0
3 years ago
The purpose of any simple machine is to allow a job to be done with less force than would normally be needed. However, when a st
Black_prince [1.1K]
The essay will highlight the fact that for every simple machine, there is always friction involved. As per the law of conservation of energy, the energy input to a system is equivalent to the energy output. Some of this output is in the form of friction, which is not useful. As the moving parts in a machine increase, it becomes more complex and more friction is generated between its parts. Therefore, a complex machine ends up being less efficient.
6 0
4 years ago
What are the requirements for chemical labels
yaroslaw [1]

A chemical label should include: a product identifier, signal word, hazard statement, precautionary statement,pictorgrams and supplier information

Explanation:

The product identifier : positioned at the upper left end corner of the label gives the identity of the hazardous chemical by appropriate terms. i.e. the name and code

Signal word: The "Danger" and "WARNING" words. The former is used for a more severe hazard where as the former is for a less severe hazard

Hazard statement : gives a description of the nature and degree of hazard of the chemical

Precautionary statements : Put for workers and users on ways to minimize exposure and lower risks in event of contact with the harmful chemical

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Learn More

Chemical labels : brainly.com/question/3115518

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#LearnwithBrainly

3 0
4 years ago
Francesca, who likes physics experiments, dangles her watch from a thin piece of string while the jetliner she is in takes off f
Tom [10]

Answer:

v_f = 82.3 m/s

Explanation:

When a suspended string makes and angle of 25 degree while aircraft is accelerating on runway then we can use force equations to find the acceleration of the aircraft

So we will have

T sin\theta = ma

T cos\theta = mg

now from above two equations we have

a = g tan\theta

a = (9.81) tan25

a = 4.57 m/s^2

now if it took 18 s to take off we can have final speed of the aircraft given by

v_f - v_i = at

v_f - 0 = (4.57)(18)

v_f = 82.3 m/s

6 0
3 years ago
1)<br> How much time does it take to lift a box using 18.0 J of work and 20.89 Watt of power?
oee [108]

Answer:.

Explanation:

Z

7 0
3 years ago
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