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Marina86 [1]
3 years ago
10

A roofing shingle elevator is lifting a 30.0-kg package to the top of a building at constant speed. The angle between the elevat

or track and the horizontal is 75∘. The power of the elevator is 800 W. Part A Determine the vertical component of the speed with which the package is moving up. Assume no friction is exerted by the incline surface on the package.

Physics
1 answer:
sashaice [31]3 years ago
3 0

Explanation:

Below is the

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Name and explain two sleeping disorders
vfiekz [6]
Insomnia and night terrors
4 0
3 years ago
A 10 kg block is attached to a light cord that is wrapped around the pulley of an electric motor, as shown above. At what rate i
guajiro [1.7K]

Answer:

the work done by the motor is 531,45 Joules

Explanation:

Using a sketch of the possible conditions, we need to find the distance that the block was moved, in order to find the work done by the electrical motor.

The sketch could be seen in the attached image.

5 0
3 years ago
A pendulum of length L is suspended from the ceiling of an elevator. When the elevator is at rest the period of the pendulum is
Stolb23 [73]
<h2>Option A is the correct answer.</h2>

Explanation:

When an elevator moves upward with consonant acceleration a, the overall acceleration on the body is given by

                        a' = a + g

So acceleration of pendulum is a + g.

We have equation for period of simple pendulum

                     T=2\pi \sqrt{\frac{l}{a'}}

In normal case a' = g here a' is more.

From the equation we can see that period of simple pendulum is inversely proportional to square root of acceleration.

Since acceleration increases period decreases.

Option A is the correct answer.

8 0
3 years ago
Read 2 more answers
6. To show how powerful he is, Mr. Avalos pushes on the wall with a force of 150 N for a whole minute!
Ede4ka [16]

If the wall doesn't move, its mean that <u>the work he did is 0 J</u>.

<h3>Introduction</h3>

Hello my friend ! Here, I will help you. Alright, before it, I will to introduce to you about work (physics). In the world of physics, <u>work is the amount of force exerted to cause an object to move a certain distance from its starting point</u>. The amount of work will be proportional to the increase in force and increase in displacement. Amount of work can be calculated by this equation :

\boxed{\sf{\bold{W = F \times s}}}

With the following condition :

  • W = work (J)
  • F = force (N)
  • s = shift or displacement (m)

<h3>Proof</h3>

How about a stationary object like a wall pushed by Mr. Avalos ? Yes it is 0 J. Let's prove it!

Give :

  • F = force of Mr. Avalos = 150 N
  • s = displacement of wall = 0 m
  • t = interval of the time = 60 s

Asked : W = work = ... J

Proven :

\sf{W = F \times s}

\sf{W = 150 \times 0}

\boxed{\sf{W = 0 \: J}} (Q.E.D)

<h3>See More :</h3>
  • Calculate the total energy of an object moving horizontally brainly.com/question/26485693
8 0
2 years ago
Which of the following is TRUE regarding Softball?
Y_Kistochka [10]

Answer:

There are two popular forms of softball, distinguished by the type of pitch.

Explanation:

Softball refers to a kind of sports that is similar to baseball in terms of game play but softball is played with a larger ball. The game of softball was first introduced as an indoor game in Chicago, Illinois, United States of America in the year 1887. Also, the field for playing softball is relatively smaller than that of baseball and as such its game play is quite faster.

Some of the kits and paraphernalia used for playing softball are base, bat, softball, gloves, jerseys etc.

There are two (2) main types of softball game and these are;

I. Fast-pitch softball.

II. Slow-pitch softball.

Hence, the true statement regarding softball is that, there are two popular forms of softball, distinguished by the type of pitch.

7 0
3 years ago
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