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Gnom [1K]
4 years ago
12

What's the most reliable source of energy on earth? 

Physics
1 answer:
slavikrds [6]4 years ago
7 0
The sun or solar energy is the most reliable source of energy on Earth.
You might be interested in
How much time would it take a ball to roll 20 yards if it is rolling 4yds/min?
LekaFEV [45]

speed rate = 4 yards per minute (yds/min)

Distance = 20 yards

time = t

Apply the formula:

time = Distance / speed rate

Replacing:

Time = 20 yards / 4 yds/min = 5 minutes

4 0
2 years ago
How do mountain building and volcanoes relate to plate motion at convergent boundaries
Naddika [18.5K]
Mountains and volcanoes are built at convergent plates in a boundary which pushes up the earth.
5 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
If 40.0 kj of energy are absorbed by .500 kg of water 10 degrees c, what is the final temperature of the water?
anastassius [24]

To solve the problem, we must use the following equation:

Q=mC_s (T_f -T_i)

where

Q is the amount of heat energy absorbed by the water

m is the mass of the water

Ti and Tf are the initial and final temperature

Cs is the specific heat capacity of the water

The data we have in this problem are:

Q=40.0 kJ

C_s =4.186 kJ/kg^{\circ}C

T_i=10^{\circ}C

m=0.500 kg

Substituting the data into the equation and re-arranging it, we find

T_f = T_i + \frac{Q}{mC_s}=10^{\circ}+\frac{40.0 kJ}{(0.500 kg)(4.186 kJ/kg^{\circ}}=29.1^{\circ}C

So the final temperature of the water will be 29.1 degrees.

8 0
3 years ago
Si el sonido no atraviesa las paredes entonces, ¿por qué se escuchan las voces de los vendedores dentro de nuestra casa aún cuan
lutik1710 [3]

Answer:

DE HECHO EL SONIDO DÍ PUEDE ATRAVESAR LAS PAREDES, PERO

CUANDO ENTRA EN LA PARED, EL SONIDO VIAJA MÁS RÁPIDO QUE EN EL

AIRE Y CUANDO SALE DEL OTRO LADO, EL SONIDO VA A UNA

VELOCIDAD ALTA, POR ESTO LSA VOCES SE ESCUCHAN AUNQUE NO

MUY CLARAS.

Explanation:

4 0
3 years ago
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