Energy from the sun is used by solar collectors to heat water or by solar cells to store energy for electricity. One disadvantage of solar energy is that _____

Answer:

The mass is one of the factors affecting gravitational field strength.

Weight (Force) = mass × gravitational field strength

= 0.10 × 10 (10 is the fixed gravitational field strength on Earth)

= 1.0 N

Answer:

The velocity stays the same

Explanation:

Given data

Mass M1= 5kg

U1=2m/s

V1=???

Mass M2= 10kg

V2= 0m/s

U2=0m/s

We know that the law of conservation of linear momentum is expressed as

M1U1+M2U2= M1V1+M2V2

substitute

5*2+10*0=5*V1+10*0

10=5V1

V1= 10/5

V1= 2 m/s

The 5kg mass will bounce back with a velocity of 2m/s

Hence the velocity stays the same

Answer:

Desalination is a process that takes away mineral components from saline water.

Explanation:

u welcome

Answer:

its D

Explanation:

didnt see what u said lol they deleted it again :(

Answer:

More specifically, federal courts hear criminal, civil, and bankruptcy cases. And once a case is decided, it can often be appealed.

Explanation:

I hope this helps and pls mark me brainliest! Thank you :)

Answer:

There are many types of federal court cases. Examples are civil, criminal, bankruptcy. There are also special "military courts" for cases related to military crimes like desertion, etc.

Explanation:

Answer:

graph A

Explanation:

the slope of the distance-time graph is speed, speed is a scalar (with magnitudes but no direction)

but the slope for the velocity time graph is acceleration, acceleration is vector quantity ( has magnitude and direction)

Hello,

✔ We have: T = 1/f; with T in s, and f in Hz

The period of the microwave is therefore 2 ms.

Answer:

2.0x10^-11

Explanation:

T=1/f

T=1/5.0x10^10

T= 2.0x10^-11

Answer:

non-luminous

Explanation:

Moon doesn't give off light of its own, that's why the moon is considered a non-luminous body

Answer:

La aceleración aumentaría en un 100%

Explanation:

Según la ley de Newton, la aceleración de un objeto es directamente proporcional a la fuerza aplicada al objeto. Está dado por:

Fuerza = masa * aceleración

Supongamos que la fuerza inicial es F, la aceleración inicial es a₁, mientras que la masa inicial es m. Por eso:

F = ma₁

a₁ = F / m

Si la masa se reduce en un 50% (0,5 m) y la fuerza se mantiene constante, la aceleración es:

a₂ = F / (0.5 m)

a₂ = 2 (F / m)

a₂ = 2a₁

La aceleración aumentaría en un 100%

Answer:

R = V ÷ I = 1.5V ÷ 0.01A = 150Ω

Explanation:

150 is the answer:)

Answer:

13

Explanation:

Brainlest pls

Answer:

B-13

Explanation:

The protons listed in the atom are 13, and the protons are the same number as the atomic number.

Answer:

The two moons of Mars are Phobos and Deimos. They are irregular in shape. Both were discovered by American astronomer Asaph Hall in August 1877 and are named after the Greek mythological twin characters Phobos (fear) and Deimos (panic) who accompanied their father Ares into battle, SO they were irregular in shape

Explanation:

Answer:D

Explanation:

Because u have to make observation then ask a question

Answer:

The wavelength can always be determined by measuring the distance between any two corresponding points on adjacent waves. In the case of a longitudinal wave, a wavelength measurement is made by measuring the distance from a compression to the next compression or from a rarefaction to the next rarefaction.

Explanation:

Thank me later

Answer:

Explanation:

So what you want to do is measure the wavelength for the wavelength by putting the ruler under or above the distance (show in picture).

amplitude you want to measure it inside of the wave. so when measuring move the ruler sideways.

( i hope this makes sense)

Answer:

Saved Money = $ 319.82

Explanation:

First, we will calculate the cost of wood:

[tex]Wood\ Cost = (No.\ of\ Cords)(Unit\ Cost)\\Wood\ Cost = (2 cords)(\$ 250/cord)\\Wood\ Cost = \$ 500\\[/tex]

Now, we calculate the time to burn gas:

[tex]Time\ to\ burn\ gas = (5\ hours/day)(120\ days)\\Time\ to\ burn\ gas = 600\ hr\\[/tex]

Now, we calculate the energy:

[tex]Energy\ Required = (600\ hr)(33000\ BTU/hr)(\frac{1\ therm}{100000\ BTU})\\\\Energy\ Required = 198\ therm\\[/tex]

Now, we will calculate the cost of gas:

[tex]Gas\ Cost = (Energy\ Required)(Unit\ Cost)\\Gas\ Cost = (198\ therm)(\$\ 0.91/therm)\\Gas\ Cost = \$\ 180.18\\[/tex]

Now, we will calculate the amount of money saved:

[tex]Saved\ Money = Wood\ Cost - Gas\ Cost\\Saved\ Money = \$\ 500 - \$\ 180.18\\[/tex]

Saved Money = $ 319.82

Answer:

D

Explanation:

I hope this helps :)

Let me know if you want a full explanation

The energy an object has while it is moving is called kinetic energy, or the energy of motion. Thus, the correct option for this question is D.

Kinetic energy may be defined as a type of energy that an object possesses due to its motion. It is defined as the work that is required in order to accelerate a body of a given mass from rest to its stated velocity. It is also known as the energy that is possessed by an object by the virtue of its motion.

Kinetic energy is the energy of motion, observable as the movement of an object, particle, or set of particles. Any object in motion is using kinetic energy: a person walking, a thrown baseball, a crumb falling from a table, and a charged particle in an electric field are all examples of kinetic energy at work.

Therefore, the energy an object has while it is moving is called kinetic energy, or the energy of motion. Thus, the correct option for this question is D.

To learn more about Kinetic energy, refer to the link:

https://brainly.com/question/25959744

#SPJ2

Explanation:

Given:

Speed of sound = 1400 m/s

Total time taken = 0.4 seconds

To find:

The depth of water

Solution:

As it take 0.4 seconds for the burst to reach the seabed and return (both ways), we can deduce that it takes 0.2 seconds to reach the seabed (one way).

This is because the speed of sound is a constant.

Now, to find the depth, we use the equation

Speed = Distance/Time

Here, we know the values of speed (1400 m/s) and time (0.2 seconds). Distance is the depth of the water, which we need to find. Let the distance be x.

Therefore

1400 = x/0.2

x = 1400 * 0.2

x = 280 m

We get the depth as 280 metres.

Feel free to ask me if you didn't understand any part.

Hope this helps! :D

Answer:

NO ANSWER

Explanation:

there is no tragectory or diagram given

WHICH OBJECT?

Answer:

25z

Explanation:

Answer: mechanical waves are caused by the disturbance of vibration in matter, whether solid, gas, liquid, or plasma.

Explanation:

Answer:

C. They are too close to the sun.

Explanation:

Answer:

"Its larger radius"

Explanation:

The electric potential is given by :

[tex]V=\dfrac{kQ}{r}[/tex]

Where

k is the electrostatic constant

Q is electric charge

r is the radius

For Earth, the value of r is very large and Q is very smaller. Due to large r, the potential of Earth's surface is almost zero. Hence, the correct option is (a).

Answer:

After a male ejaculates, many sperms move to the upper vagina (via contractions from the vagina) through the cervix and across the length of the uterus, reaching the fallopian tubes. Here they will meet the egg cell ready to be fertilized

Answer:

Gravity is a non-contact force that was observed famously by Sir Isaac Newton, who watched an apple falling from a tree to the ground. ... Newton was the first to realise that gravity existed in space and it was the force which holds the Moon in orbit around the Earth and planets in orbit around the Sun.

Answer:

Answer:

t₁ > t₂

Explanation:

A coin is dropped in a lift. It takes time t₁ to reach the floor when lift is stationary. It takes time t₂ when lift is moving up with constant acceleration. Then t₁ > t₂,  t₁ = t₂,  t₁ >> t₂ ,  t₂ > t₁

Solution:

Newton's law of motion is given by:

s = ut + (1/2)gt²;

where s is the the distance covered, u is initial velocity, g is the acceleration due to gravity and t is the time taken.

u = 0 m/s, t₁ is the time to reach ground when the light is stationary and t₂ is the time to reach ground when the lift is moving with a constant acceleration a.

hence:

When stationary:

[tex]s=\frac{1}{2}gt_1^2\\\\t_1^2=\frac{2s}{g} \\\\When\ moving\ with\ acceleration(a):\\\\s=\frac{1}{2}(g+a)t_2^2\\\\t_2^2=\frac{2s}{g+a}[/tex]

Hence t₂ < t₁, this means that t₁ > t₂.

Answer:

The beat frequency is always equal to the difference in frequency of the two notes that interfere to produce the beats. So if two sound waves with frequencies of 256 Hz and 254 Hz are played simultaneously, a beat frequency of 2 Hz will be detected. ... These sounds will interfere to produce detectable beats.

Explanation:

Answer:

Transparent = lets light pass through without significant interference

Translucent = lets light pass through with significant interference

Opaque = Doesn't let light pass, instead absorbs it