The speed of light if 3 • 10^8 m/s. If the Venus is 30,220,000 mikes from Earth how long does it take for light to travel from Venus to earth?

Answers

Answer 1
Answer:

Light takes 162.1 seconds to travel from Venus to earth.

Explanation:

Speed of light=3 x 10⁸ m/s

distance between Venus and earth =30,220,000 miles=48634375680 m

Now the distance is given by d= v t

d= distance

v= velocity

t= time

48634375680= 3 x 10⁸ t

t=162.1 s


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Mechanical energy is the sum of kinetic energy and all forms of potential energy that an object has.Please select the best answer from the choices provided
t or f

Answers

Answer:

the mechanical energy of an object can be the result of its motion (i.e., kinetic energy) and/or the result of its stored energy of position (i.e., potential energy). The total amount of mechanical energy is merely the sum of the potential energy and the kinetic energy.

Answer:

t

Explanation:

Which of the following are early clues that signal an earthquake may occur? Select all that apply. Changes in magnetic properties of rock Movement of magma Decrease in well water levels Increase in sulfur dioxide and carbon dioxide ground emissions Increases in radon gas in groundwater Foreshocks

Answers

The following answers apply;

  • Changes in magnetic properties of rock
  • Decrease in well water levels
  • Increases in radon gas in groundwater
  • Foreshocks  

These other choices may be good indicators of an imminent volcanic eruption;

Movement of magma

Increase in sulfur dioxide and carbon dioxide ground emissions


Answer:

correct order for early clues that notify about earthquake is:

\rightarrow change in magnetic properties of rock

\rightarrow Decrease in water levels in well

\rightarrow  increase in the amount of radon gas in subsurface water foreshocks

Explanation:

correct order for early clues that notify about earthquake is:

\rightarrow change in magnetic properties of rock

\rightarrow Decrease in water levels in well

\rightarrow  increase in the amount of radon gas in subsurface water foreshocks

The other that can take place the position of clues for volcanic eruption are

\rightarrow  Movement of magma

\rightarrow  increase in SO_2 and CO_2 emission from grounds

What causes a nebula to collapse into a dense mass?

Answers

the answer is Gravity.

  Irregularities in the density of the gas causes a net gravitational force

Please Help Meee.. Will give brainlest What is the total resistance in the circuit depicted? Use R1 = 7.00 Ω, R2 = 8.00 Ω, R3 = 4.00 Ω, R4 = 6.00 Ω, R5 = 3.00 Ω, R6 = 8.00 Ω.

36.0 Ω

19.6 Ω

18.3 Ω

25.9 Ω

Answers

Answer:

Total resistance is 19.6 Ω for the circuit .

Explanation:

Given:

Six resistors of a circuit namely R_1 to R_6 .

Where

R_1 and R_2 are in series.

R_3 and R_4 are in parallel.

R_5 and R_6 are in parallel.

We know that continuous resistor which are in series are added up to find the equivalent resistance.

Similarly resistors which are arranged in parallel their equivalent resistance is (R_3R_5)/(R_3+R_5)  for the case of R_3 and R_5.

According to the question:

Total resistance = R(equivalent) :

R_(eq_) = R_1+R_2+((R_3R_4)/(R_3+R_4) )+((R_5R_6)/(R_5+R_6) )

R_(eq_)=7+8+((4* 6)/(4+6) )+((3* 8)/(3+8) )

R_(eq_)=7+8+((24)/(10) )+((24)/(11) )

R_(eq_)=15+(2.4 )+(2.18)

⇒  R_(eq_)=19.58 Ω

So the total resistance of the circuit depicted is 19.58 Ω approximated to nearest tenth that is 19.6 Ω

Which is the best example of the concept of heredity? A. A black cat blends into its environment at night. B. A baby has his mother's hair and eye color. C. As a barnacle grows, it gets calcium for its shell from seawater. D. The sunflower will move so its flower head is always facing the sun.

Answers

B) A baby has his mother's hair and eye color 
B. A baby has it's mother's hair and eye color

The reason for this is, well, heredity is the passing of traits from parents to offspring. So, a black cat blending into it's environment at night simply does not have much to do with heredity. But a baby inheriting it's mother's eye color and hair color is definitely heredity, for it was inherited.

Hope this helped!!

a truck with a mass of 1150 kg and a velocity of 13 m/s collided into a parked car with a mass velocity does the car move forward after the collision

Answers

Answer:

Yes

Explanation:

The truck has momentum since it is moving and momentum is a product of mass and velocity. After impact, part of momentum that the truck had is transferred to the car hence the car initially at rest moves a significant diatance. Here, we utilize the formula MV= (m+M)v where M and V represent mass and velocity of the truck while m is the mass of car, v is the common velocity. Note that some letters are capital while others small, don't confuse these.