What increases as the temperature of a solid object rises?A. thermal energy

B. potential energy

C. volume

D. mass

Answers

Answer 1

Answer: answer is thermal energy

Answer 2

Answer: A. Thermal energy
Thermal energy is heat energy, therefore the hotter a solid is the more thermal energy it has.

C. Volume
When an object gets hotter, it expands. This is becuase the particles vibrate more and so are less compact.

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A series circuit contains a 30 resistor a 20 resistor and a 10 resistor in the power supply provides 100 V to the circuit the current in the tenor sister has two significant figures what is the current

Answers

Answer:

1.7 ohms

Explanation:

edge 2021

Answer:

ans is 30 +20 +10 =60 160

A beam of white light goes from air into water at an incident angle of 84.0∘. At what angles are the red 660 nm and violet 410 nm parts of the light refracted? Red light in water has an index of refraction equal to 1.331 and that of violet light is 1.342.

Answers

The angle at which the light got refracted is known as the angle of refraction. The angle of refraction of red light is 48.3°. While the angle of refraction of Violet light is 47.8°.

What is snell law?

"The ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant, for the light of a given color and for a given set of media,

According to Snell's law. The formula for Snell's law is

$\rm {n= (sini)/(sinr) }$

i is the incidence angle

r is the refractionangle.

n is the refractive index of the medium

For red light,

$\rm {n= (sini)/(sinr) }\n\n\rm {1.331= (sin84^0)/(sinr)\n$

$\rm{sinr=(sin84^0)/(1.331)}$

$\rm r = sin^(-1)(0.7472)$

$\rm r = 48.3^0$ $\rm r = 47.8^0$

Hence the angle of refraction of red light is 48.3

For violet light,

$\rm {n= (sini)/(sinr) }\n\n\rm {1.342= (sin84^0)/(sinr)\n$

$\rm{sinr=(sin84^0)/(1.342)}$

$r = sin^(-1)(0.7411)$

Hence the angle of refraction of Violet light is 47.8°.

To learn more about snell's law refer to the link;

brainly.com/question/10112549

Answer:

Red light has an angle of refraction of 48.3°.

Violet light has an angle of refraction of 47.8°.

Explanation:

From Snell's law of refraction, the refractive index is the ratio of the sine of the angle of incidence to the sine of the angle of refraction.

$n=(\sin i)/(\sin r)$

For red light in water,

$1.331=(\sin 84)/(\sin r)$

$\sin r=(\sin 84)/(1.331)=0.7472$

$r=\sin^(-1)0.7472=48.3}$

For violet light in water,

$1.342=(\sin 84)/(\sin r)$

$\sin r=(\sin 84)/(1.342)=0.7411$

$r=\sin^(-1)0.7411=47.8}$

Which of the following is not a type of pulley systemA fixed
B movable
C combination
D advantageous

Answers

D advantageousA pulley is a wheel on an axle or shaft that is designed to support movement and change of ... The drive element of a pulley system can be a rope, cable, belt, or chain that runs over the pulley.

A ball rolls down an incline with an acceleration of 10 cm/s^2. If it starts with an initial velocity of 0 cm/s and has a velocy of 50 cm/s when it reaches the bottom of the ramp, how long is the ramp?

Answers

Given a = 10 cm/s²
u = 0 cm/s
v = 50 cm/s
we know that
v²=u²+2aS
2500=2×10×S
2500÷20 = S
S= 125 cm
The ramp is 125 cm

Final answer:

The time for the ball to reach the bottom of the ramp is 5 seconds. Using this time value, the acceleration, and the initial velocity, you can calculate the length of the ramp, which is found to be 125 cm.

Explanation:

The question involves the physics principles of kinematics, specifically the concept of acceleration. Given that the initial velocity is 0 cm/s, the final velocity is 50 cm/s, and the acceleration is 10 cm/s^2, you can find the time it took for the ball to reach the bottom using the formula vf=vi+at (Final velocity = initial velocity + acceleration * time). Substituting the given values, you get the equation 50cm/s = 0cm/s + 10cm/s^2 * time, simplifying which gives time = 5 seconds.

To find the length of the ramp, you can use another kinematic equation, d = vit + 0.5at^2 (Distance = initial velocity * time + 0.5 * acceleration * time^2). Substituting the values we know, (initial velocity = 0, acceleration = 10 cm/s^2, time = 5 s), the equation simplifies to d = 0*5 + 0.5*10*5^2 = 0 + 0.5*10*25 = 125 cm. Therefore, the length of the incline or ramp is 125 cm.

Learn more about Kinematics here:

brainly.com/question/35140938

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While sitting in your car by the side of a country road, you see your friend, who happens to have an identical car with an identical horn, approaching you. You blow your horn, which has a frequency of 260 Hz; your friend begins to blow his horn as well, and you hear a beat frequency of 6.0Hz .How fast is your friend approaching you?

Express your answer to two significant figures and include the appropriate units.