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Svetradugi [14.3K]
3 years ago
12

Please help ! Which of the following objects has the greatest momentum?

Physics
1 answer:
Tasya [4]3 years ago
4 0

Answer:

An object with a mass of 0.5 kg and a velocity of 3 m/s

Explanation:

Momentum = mass * velocity

= 0.5 * 3

= 1.5

Highest value among all.

Hope it helps!!

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Describe the arrangement of the sun moon and earth during a solar eclipse and a lunar eclipse
Blababa [14]
For any eclipse, all three bodies are in the same straight line. For a solar eclipse, the moon is the one in the middle. For a lunar eclipse, the Earth is the one in the middle.
5 0
3 years ago
Large amplitude of sound vibrations will produce.....
user100 [1]

Answer:

louder sound.

Explanation:

The amplitude of a sound wave determines its loudness or volume. A larger amplitude means a louder sound

8 0
4 years ago
Nguồn phát của tia X
Naya [18.7K]

Answer:

Từ ánh sáng từ mặt trời đến nhiệt liên tục phát ra từ cơ thể chúng ta, có nhiều dạng bức xạ khác nhau. Tuy nhiên, khi nói đến bức xạ và nguy cơ ung thư, hầu hết mọi người đều nghĩ đến tia X và tia gamma.

Các nguồn tự nhiên của tia X và tia gamma bao gồm khí radon, chất phóng xạ trong lòng đất và các tia vũ trụ tấn công hành tinh từ không gian. Tuy nhiên, loại bức xạ này cũng có thể do con người gây ra. Tia X và tia gamma được sản xuất trong các nhà máy điện hạt nhân để sử dụng trong các xét nghiệm hình ảnh y tế, điều trị ung thư, chiếu xạ thực phẩm và máy quét an ninh sân bay với liều lượng nhỏ.

English:

From light from the sun to the heat that is continuously emitted from our bodies, there are many different forms of radiation. However, when it comes to radiation and cancer risk, most people think of X-rays and gamma rays.

Natural sources of X-rays and gamma rays include radon gas, underground radioactive material, and cosmic rays that strike the planet from space. However, this type of radiation can also be caused by humans. X-rays and gamma rays are produced in nuclear power plants for use in medical imaging tests, cancer treatments, food irradiation and airport security scanners in small doses.

7 0
3 years ago
An old iron beam was coated with an unknown metal. there is a crack on the coating and it is observed that the iron is rusting a
IgorLugansk [536]
Based on the given description above about the metal that is being used for fractures, the old metal coating that was used before was made of TIN, and now, the metal that is used to repair fractures in order to avoid further corrosion is ALUMINUM. Hope this answer helps.
3 0
4 years ago
A centrifuge in a medical laboratory rotates at an angular speed of 3,650 rev/min. when switched off, it rotates through 48.0 re
AlladinOne [14]
First of all we need to convert everything into SI units.

Let's start with the initial angular speed, \omega _i = 3650 rev/min. Keeping in mind that
1 rev = 2 \pi rad
1 min=60 s
we have
\omega _i = 3650  \frac{rev}{min} \cdot  \frac{2 \pi rad/rev}{60 s/min} =382.0 rad/s

And we should also convert the angle covered by the centrifuge:
\theta = 48.0 rev= 48.0 rev \cdot  2 \pi  \frac{rad}{rev}=301.4 rad

This is the angle covered by the centrifuge before it stops, so its final angular speed is \omega_f =0.

To solve the problem we can use the equivalent of
2aS = v_f^2 -v_i^2
of an uniformly accelerated motion but for a rotational motion. It will be
2 \alpha \theta = \omega_f^2-\omega_i^2
And by substituting the numbers, we can find the value of \alpha, the angular acceleration:
\alpha=- \frac{\omega_i^2}{2 \theta}=- \frac{(382 rad/s)^2}{2 \cdot 301.4 rad}=-242.1 rad/s^2
4 0
3 years ago
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