Compare the charges and masses of protons, neutrons and electrons.

Answers

Answer 1

Answer: proton = positive charge (relative mass of 1836)

neutron = neutral or no charge (relative mass of 1839)

electron = negative charge (relative mass of 1)

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a child riding a bicycle at 15 m/s decelerate at the rate of 3.0 meters per second squared for 4.0 seconds. what is the child's speed at the end of the 4.0 seconds?

Answers

3m/ $s^(2)$ of deceleration for 4 seconds.
3 x 4 = 12
15 - 12 = 3
The child will be riding a bicycle at 3m/s after 4 seconds.

If you want a full equation (which you might not):
let a be acceleration rate, Vf be final velocity, Vi as initial velocity, and t as time.
a = (Vf - Vi)/t
let's fill in everything we know now:

-3 = (Vf - 15)/4
now let's solve for Vf

-3 = Vf/4 - 15/4
-Vf/4 = 3 - 15/4
Vf/4 = -3 + 15/4
Vf = -12 + 15
Vf = 3

Therefore, final velocity is 3m/ $s^(2)$

What is the answer for this in scientific notation (6.77 x 10³) + (5.85 x 10³) = ?

Answers

Answer:

12620

Explanation:

Answer:

(6.77 x 10³) + (5.85 x 10³) = 12620= 1.2620 x 10⁴

Explanation:

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How many miles can you get on one tank of gas if your tank holds 18 gallons and you get 22 miles per gallon?

Answers

Multiply the two. The units will cancel out. 22 miles per gallon can be expressed as 22 miles / 1 gallon, so you can write the following:
18 gallons * 22 miles / 1 gallon
Which simplifies to 18 * 22 miles = 396 miles.

Answer: 18*22=396

Explanation:

18*22=

(10*22) + (8*22)=

220+176=396

Amusement parks are a great place to see Newton's laws of motion in action. Choose your favorite ride and describe the parts of the ride that illustrate each of Newton's laws of motion. You are only required to give a written description; however, if you would like, you may draw and label a picture in addition to the paragraph explanation. Please be sure to look at the rubric to see exactly what you are expected to include!

Answers

Since it's against good conscience, I will not directly tell you how Newtonian mechanics relates to one's favorite amusement park ride, but I can still assist. Think about the very last ride you were on. There are always Newtonian forces acting on you, but even more-so at the amusement park. Anything dealing with the 'forces' of gravity or centrifugal force will do, and these are seen throughout just about every ride fathomable in a park.

Describe how the design of a vacuum flask keeps the liquid inside hot ?

Answers

the gap between the two flasks is partially evacuated of air creating a near vacuum which significantly reduces heat transfer by conduction or convection

The gap between the two flasks is partially evacuated of air, creating a near-vacuum which significantly reduces heat transfer by conduction or convection. Vacuum flasks are used domestically to keep beverageshot or cold.

Snowshoes enable a person to walk on deep snow because the snowshoesa. decrease the person’s weight on the snow.
b. increase the area over which the person’s weight is distributed.
c. increase the pressure on the snow.
d. increase the buoyancy of the person.

Answers

Answer:

Option B is correct.

Explanation:

Snowshoes has large area of crossection.

As a person wears the snowshoes, the weight of the person distributed over a large area and thus the pressure exerted by the surface due to the weight of the person is less.

The relation among pressure, force and area of crossection is given below.

$Pressure = (Force)/(Area of crossection)$

As area of crossection is large, pressure is small and thus the person walk on deep snow.

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Vector addition is used when motion involves

When Anna eats an apple, the sugars in that apple are broken down into the substance called glucose. Glucose is then burned in her body for energy. One of the body parts that needs this energy is the heart, which beats due to electrical impulses. A byproduct of this glucose breakdown is the heat that warms her body and is later released.Which identifies the energy transformations that take place in Anna’s body as this process takes place?A: Mechanical energy is converted to kinetic energy, which is then converted to potential energy.B: Chemical energy is converted to thermal energy and electrical energy.C: Electrical energy is converted to chemical energy and thermal energy.D: Mechanical energy is converted to potential energy which is then converted to kinetic energy.