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velikii [3]
3 years ago
8

A student is observing an object of unknown mass that is oscillating horizontally at the end of an ideal spring. The student mea

sure the object's period of oscillation with a stopwatch. While the object is continuously oscillating, the student determines the maximum speed of the object during two oscillations. The first speed is 3.5 m/s and the second speed is 2.7 m/s. Which of the following could account for the decrease in the object's maximum kinetic energy?
a. Meterstick
b. Motion sensor
c. Balance
d. Photogate
Physics
1 answer:
Phoenix [80]3 years ago
7 0

Answer:

Decrease in the object's maximum kinetic energy is caused by loss of energy by the system to its immediate surroundings.

Explanation:

None of the options are correct because for an object spring system, maximum kinetic energy is reduced when the system loses energy to the immediate surrounding.

Thus, decrease in the object's maximum kinetic energy is caused by loss of energy by the system to its immediate surroundings.

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3. A force of 90N pushes downward at an angle of 32° to the horizontal on an object resting on the floor. The
Nonamiya [84]

F = m × g

Now when, a force acts on the object at an angle and in downwards, thus formula becomes:

= N = mg + F sin(x)

Here,

  • N = normal force, m = mass , g = acceleration due to gravity, F = outside force, x = the angle formed

See, as we habe to calculate the weight, which is m × g, thus we will recreate thus formula like thus:

= N = w + F sin(x) --------- [Weight = w]

Now, the solutions becomes easy from here, just put the values:

= N = w + F sin(x)

= 200 = w + 90 × sin(32)

= 200 = w + 90 × 0.55

= 200 = w + 49.5

= 200 - 49.5 = w

= 150.5 = w

I have got my answer but in approx, hope you will not mind. ^^"

8 0
3 years ago
Pin p is constrained to move along the curve defined by the lemniscate r=(4sin2θ)ft.if the slotted arm oa rotates counterclockwi
ruslelena [56]

position of the peg is given by the equation

r = 4 sin2\theta

now the rate of change in position is given as

v = \frac{dr}{dt}

v = \frac{d}{dt}(4 sin2\theta)

v = 8cos2\theta*\frac{d\theta}{dt}

v = 8 cos2\theta*\omega

given that

\omega = 1 rad/s

\theta = 59 degree

now we have

v = 8*cos(2*59)* 1 = -3.76 m/s

<em>so its speed will be 3.76 m/s in magnitude</em>

5 0
3 years ago
The gravitational force experienced by Earth due to the Moon is ________ the gravitational force experienced by the Moon due to
Vsevolod [243]

The gravitational force experienced by Earth due to the Moon is <u>equal to </u>the gravitational force experienced by the Moon due to Earth.

<u>Explanation</u>:

The force that attracts any two objects/bodies with mass towards each other is defined as gravitational force. Generally the gravitational force is attractive, as it always pulls the masses together and never pushes them apart.

The gravitational force can be calculated effectively using the following formula: F=GMmr^2  

where “G” is the gravitational constant.

Though gravity has the ability to pull the masses together, it is the weakest force in the nature.

The mass of the Earth and moon varies, but still the gravitational force felt by the Earth and Moon are alike.

5 0
3 years ago
Work done by a force forum X to X
Ksivusya [100]

Answer:

W = 68 J

Explanation:

On a force vs displacement chart, work is the area under the curve.

The area under the curve can be divided into a rectangle and a triangle

W = Fd = (2 N)(12 - 0 m) + ½(13 - 2 N)(12 - 4 m) = 68 N•m = J

5 0
3 years ago
During spring tide, the sun, earth, and moon are in a straight line. This causes ...............
enyata [817]

Answer:

This causes higher average tidal ranges. The gravitational pull of the Sun and moon on Earth combined cause high tides that will be higher and low tides that will be lower than average.

4 0
3 years ago
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