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Ostrovityanka [42]
2 years ago
13

Question #1

Physics
1 answer:
Archy [21]2 years ago
8 0

Given the diagram provided, we can confirm that the object will accelerate in a downward direction.

<h3>Why will it accelerate downwards?</h3>

The free-body diagram shows us the forces that are acting on this object. Through this diagram, we can see that the forces on the left and right of the object are balanced, meaning that there will not have movement in either of these directions.

The diagram shows that the downward force being applied is not balanced by an opposite force, so the object will accelerate in this direction.

Therefore, we can confirm that object will accelerate in a downward direction due to its downward force not being balanced by an opposing force.

To learn more about balanced forces visit:

brainly.com/question/26115859?referrer=searchResults

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Determine the kinetic of 600 kg roller coaster car that is moving with the speed of 35.2 m/s.
antiseptic1488 [7]
The answer is 10,560 Joules or 1.1*10^4


Explanation:

Step 1: Calculate
The equation for Kinetic Energy is

Kinetic energy=.5 times Mass times Velocity²
KE=.5*m*v²

so we plug in our numbers
KE=.5*600*35.2²

This works out to be 10,560 Joules or 1.1*10^4
5 0
3 years ago
Electricity seems like a fundamental element in the construction of any home. However, to have electricity run into and out of a
olganol [36]

Answer:

•Most of the components that make up curcuits are conductors. Electricity flows easily thought conductors such as metal or water.Electricity does not flow easily thought insulators such as wood or rubber.

•When a battery is used to power a circuit, the circuit the current must travel from one pole of the battery to the opposite battery.

•Resisotors show the flow of Electricity throught a circuit this can prevent components of the circuit from 'brning out'. In a curcuit diagram, resistors are represented by bending lines.

Explanation:

8 0
3 years ago
What is the value of the boltzmann constant of 1.7 moles of gas at 290 K that has an average kinetic energy of 1.4 MJ? A. 7x10^-
fredd [130]

Answer:

The value of  of the Boltzmann constant is 3.14\times 10^{-23} J/K.

Explanation:

Generally the formula for average kinetic energy of a molecule :

K.E=\frac{3}{2}kT

where,

k = Boltzmann’s constant

T = temperature = 290 K

Given:

Number of molecules in 1.7 moles:

1.7\times 6.022\times 10^{23} molecules=1.0237\times 10^{24} molecules

Average kinetic energy of 1.7 moles = 1.4 MJ =1.4\times 10^6 J

Average kinetic energy of 1 molecule = \frac{1.4\times 10^6 J}{1.023\times 10^{24}} =1.3675\times 10^{-18} J

1.3675\times 10^{-18} J=\frac{3}{2}\times k\times (290K)

k=3.14\times 10^{-23} J/K

8 0
3 years ago
If a man shoots a spear at a place where he sees the fish inside water , is it possible that it will hit the fish ? Write with a
madam [21]
It is possible, but very slim. The fish will move before the spear goes through its body because the fish will sense danger and feel it hit the water and automatically move
6 0
3 years ago
A pendulum has a mass of 1.5 kg and starts at a height of 0.4 m. If it is released from rest, how fast is it going when it reach
ella [17]

Answer:

A. 2.8 m/s

Explanation:

Suppose that at the height of 0 m, the path of the pendulum is lowest.

If we use law of conservation of energy, the pendulum will have zero kinetic energy or K.E when it is at highest point, because K.E happens during movement of object and at the highest point all the energy will be P.E

                                                    P.E= mgh

Similarly, when the pendulum reaches at the lowest point, the height becomes zero and the P.E also becomes zero. Now all the energy will be K.E

                                               K.E= 1/2 m v^2

In question, we are asked about the speed as the pendulum  it reaches the lowest point of its path. Like we mentioned P.E will be zero at lowest point  because of zero height. And also we will use law of conservation of energy because no energy has been lost from system.

                                                  K.E=     P.E

                                       1/2 m v^2  =   mgh

Taking sq.root at both sides

                                                  v= Under root 2 gh

                                                   v=Under root 2x 9.8 m/s x0.4 m

                                                   v=Under root 7.84

                                                    v=2.8 m/sec

Hope it helps!

3 0
3 years ago
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