# How do scientists use the Doppler affect to understand the universe?

Answer: Astronomers use the Doppler effect to measure the frequency of light waves as an object is moving with respect to the observer

## Related Questions

Velocity Equation Practice: 1. If a westbound train has gone 359 miles in 5 hours, what is the velocity of the train?

You would take the change in displacement or distance (359 miles minus 0) and divide it by the change in time (5 hours minus 0)... your answer is 71.8 m/s

v=359 mi/5 hours=71.8

Explanation: miles per hour

What is the name of PdPO4

The name of PdPO4 is Palladium Phosphate. Good luck.

In addition to decreasing the amount of fat in a dish, salsa can also increase the amount of A. vitamin C and fiber.
B. calcium and phosphorus.
C. calories and cholesterol.
D. sodium and cholesterol.

Its c ok im sorry if i got the last answer wrong

Raw meat can spread pathogens. Which statement describes the best way to prevent the spread of foodborne illness? A. Use a paper towel to wipe off everything that the meat touched.

B. Rinse your knives and cutting board with water.

C. Wash your hands, utensils, and surfaces with hot soapy water.

D. Continue cooking and assume that pathogens did not spread.

C.) wash hands, utensils, and surfaces with hot soapy water
A. Use a paper towel to wipe off everything that the meat touched

A 3.682 g sample of kclo3 is dissolved in enough water to give 375. ml of solution. what is the chlorate ion concentration in this solution?

Answer: The chlorate ion concentration in the solution is 0.080 M

Explanation:

To calculate the molarity of solution, we use the equation:

We are given:

Mass of solute (potassium chlorate) = 3.682 g

Molar mass of potassium chlorate = 122.55 g/mol

Volume of solution = 375 mL

Putting values in above equation, we get:

The chemical equation for the ionization of potassium chlorate follows:

1 mole of potassium chlorate produces 1 mole of potassium ions and 1 mole of chlorate ions

So, concentration of chlorate ions in the solution = 0.080 M

Hence, the chlorate ion concentration in the solution is 0.080 M

MKClO₃: 39g+35,5g+(16g×3) = 122,5 g/mol

1 mol -- 122,5g
X mol -- 3,682g
X = 3,682/122,5
X = 0,03 mol

375 ml = 0,375 l = 0,375 dm³

C = n/V
C = 0,03/0,375
C = 0,08 mol/dm³

[ClO₃-] = [KClO₃] = 0,08 mol/dm³

How do thermal energy and intermolecular forces behave with each other?

When there is more thermal energy, there are less intermolecular forces. I hope this answers your question ☺️☺️

Kinetic molecular theory says that as water molecules absorb energy, their motion and temperature __________ and the sample becomes ___________.

increases and hotter

Mg + HCI = MgCI2 = H2

The correct balanced equation is :

Mg+2HCl->Mgcl2 +H2

Warm air rises and takes heat with it; eventually it cools and sinks describes how heat is transferred by convection. A. True
B.False