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Tems11 [23]
3 years ago
11

Martha wants to calculate an object's velocity. What will she need to do?​

Physics
1 answer:
rjkz [21]3 years ago
4 0

Answer:

you divide the distance by the time it takes to travel that same distance, then you add your direction to it.

You might be interested in
A horizontal spring on a frictionless surface has a spring constant of 10 N/m with a mass of 2kg attached to the end of the spri
Alex

Answer:

0.356 times the mass pass through equilibrium per second.

Explanation:

Given that,

Spring constant = 10 N/m

Mass = 2 kg

Stretched spring = 2m

We need to calculate the frequency

Using formula of frequency

f=\dfrac{1}{2pi}\sqrt{\dfrac{k}{m}}

Where, m = mass

k = spring constant

Put the value into the formula

f=\dfrac{1}{2\pi}\sqrt{\dfrac{10}{2}}

f=0.356\ Hz

We know that,

Hertz = cycle per second

Hence, 0.356 times the mass pass through equilibrium per second.

4 0
3 years ago
Two glasses of water have the same thermal energy so do they have to have the same temperature
Vedmedyk [2.9K]

Before answering this question first we have to understand temperature and thermal energy.

Thermal energy of a substance is defined as the sum total of kinetic ,potential etc. energy  of the substance. When two bodies come in contact with each other,the part of the thermal energy is transferred from hotter body to the cooler one which is called heat.

Temperature is the physical quantity which gives the direction of heat flow and determines whether two thermodynamic systems are in thermal equilibrium or not. Temperature of a thermodynamic system is a measure of average kinetic energy of that system.

If two systems have same average kinetic energy,then two systems must have same temperature.The temperature of a substance increases or decreases due to the change in average kinetic energy.

As per the question the two glasses have same thermal energy.It is told that the two glasses must have same temperature which is wrong.It is because thermal energy does not mean the average kinetic energy of the glass. Kinetic energy is a part of thermal energy.

Hence two glasses may be at different temperature depending on their average kinetic energy.



6 0
4 years ago
Which statement best describes what happens when a person sees an orange t-shirt?
DochEvi [55]

Answer:

Orange light reflected from the t-shirt enters human eyes.

hope this helps :)

6 0
4 years ago
A wheel accelerates so that it's angular speed increases uniformly from 150 rads/s to 580 rads/s in 16 revolutions.Cakcjlate its
LenaWriter [7]

Answer:

A = 26.875 rad/s²

Explanation:

<u>Given the following data;</u>

Initial angular speed, Uw = 150 rads/s.

Final angular speed, Vw = 580 rads/s.

Time = 16 seconds.

To calculate the angular acceleration;

From kinematics equation;

At = Vw - Uw

Where;

  • A is the angular acceleration.
  • t is the time
  • Vw is the final angular speed.
  • Uw is the initial angular speed.

Substituting into the formula, we have;

A*16 = 580 - 150

16A = 430

A = 430/16

<em>A = 26.875 rad/s²</em>

3 0
3 years ago
I WILL MARK BRAINLIEST TO FIRST ANSWER IF CORRECT
charle [14.2K]

Answer:

Conventional current flows from cathode to anode. It is opposite to the direction of flow of electrons.

Explanation:

Hope this helped, Have a Great Day!!

3 0
4 years ago
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