What is the frequncy of a wave that has a speed of 8m/s and a wave length of 2?

Answers

Answer 1

Answer: v = f \times λ

v = 8m/s

λ = 2

f = v \div λ

f = 8 \div 2

f = 4hz

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Charged objects have a _________ charge. A. net B. moving C. positive D. negative

A car is moving in uniform circular motion. If the car's speed were to double to keep the car moving with the same radius, the acceleration wouldincrease by a factor of 2
increase by a factor of 4
decrease by a factor of 2
decrease by a factor of 4

Answers

Answer:

Increase by a factor of 4.

Explanation:

The acceleration of a car moving with speed v in a circle of radius R is given by:

$a=(v^2)/(R).$

Now if we double the speed $v$ in the equation above, it becomes $2v$ . Thus:

$a=(v^2)/(R)\:\: {\rightarrow}\:\: a_n=((2v)^2)/(R)=4(v^2)/(R)=4a.$

Therefore the acceleration is increased by a factor of 4.

Un herrero calienta un trozo de acero en un horno para poder forjarlo.A medida que aumenta la temperatura del metal ¿Que ocurre con su densidad?¿Aumenta o disminuye? Explica tu respuesta

Answers

La densidad del metal disminuye a medida que se calienta . Piense en el agua . Cuando hace frío , se convierte en hielo , lo cual es muy densa . Cuando hace calor , se evapora en gas , que no es denso.

Espero que esto no es confuso , yo no soy un hablante nativo de español .

Where does sugar enter the blood?

Answers

After we eat, blood sugar concentratons rise, the pancreas releases insulin automatically so that the glucose enters cells, as more and more cells receive glucose, blood sugar levels come down to normal again. Exces glucose is stored as glycogen in the liver and muscles.Hope this helps.

While discussing the effects of loose wheel bearings: Technician A says that vibration may occur while driving. Technician B says that the bearing may make noise. Who is correct? a. Technician A b. Neither A nor B c. Technician B d. Both A and B

Answers

Answer:

Option "D" is the correct answer i.e. Both Technicians A & B

Explanation:

Dear,

Loose wheel bearings can be caused on any machine.

The Following can be the reasons :

the machine or motor is installed improperly
the rotor(rotating part) of machine is not balanced
the cover get deteriorated with time
Bad manufacturer

So, when the bearings will be loose then the following can happen:

It will produce vibration in machine which can be judged by a vibration pen eg. SKF vibration pen
The vibration will also result in noise. You can check by
The machine winding if it is motor will burn-out.
Bush needs to be installed if the bearing runs loose.

Therefore, "D" is right.

How far will a you travel if you run for 10 minutes at 2 m/sec?

Answers

You would travel 1200 meters if you run for 10 minutes at 2 meters /second because the total distance traveled by any object is the multiplication of the speed of the object to the time taken to travel that distance.

What is speed?

The total distance covered by any object per unit of time is known as speed. It depends only on the magnitude of the moving object.

As given in the problem we have to find out the total distance traveled if one runs for 10 minutes at a speed of 2 meters / second.

The running speed = 2 meters / second

The time is taken while running = 10 minutes

=10 ×60

= 600 seconds

The distance traveled by you = 2 meters / second × 600 seconds

=1200 meters

Thus, the total distance traveled by you would be 1200 meters

To learn more about speed from here, refer to the link;

brainly.com/question/7359669

#SPJ2

Well 10*60=600
2m/sec
600*2= 1200

What type of heat transfer is used to fry an egg in a pan and how can you tell?A) It is conduction because the egg gets cooked.
B) It is conduction because the egg is touching the pan.
C) It is convection because you put oil in a frying pan to cook in it.
D) It is convection because you can feel the heat a few inches away from the pan.

Answers

Answer: Option (B) is the correct answer.

Explanation:

A process in which transfer of heat occurring when one object touches another object is known as conduction.

For example, when a pan is heated and then an egg is placed over the pan. Then there will be transfer of heat from pan towards the egg.

As a result, the egg gets cooked because the egg was touching the pan.

Hence, we can conclude that it is conduction because the egg is touching the pan.

Heat transfer is used to fry an egg in a pan, It is conduction because the egg is touching the pan. Hence the correct option is option (B).

When frying an egg in a pan, the primary mode of heat transfer is conduction. Conduction is the transfer of heat through direct contact between two objects or substances.

The pan is heated on a stovetop or a heat source, which causes the pan to become hot. When the egg is placed in the pan, the heat from the pan is transferred to the egg through the process of conduction.

Option A suggests that it is conduction because the egg gets cooked, but this answer does not explain the specific mechanism of heat transfer involved.

Option C mentions convection because oil is used in frying. While oil can enhance the cooking process, convection is not the primary mode of heat transfer in this scenario.

Option D states it is convection because you can feel the heat a few inches away from the pan.

Therefore, option B is the correct answer, as it correctly identifies that the heat transfer involved in frying an egg in a pan is conduction because the egg is touching the pan.

To know more about heat transfer:

brainly.com/question/16951521

#SPJ6

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