a string is attached to the rear-view mirror of a car. a ball is hanging at the other end of the string. the car is driving around in a circle, at a constant speed. which of the following lists gives all of the forces directly acting on the ball?

Answers

Answer 1

Answer: The correct answer for the question that is being presented above is this one: "b. tension, gravity and centripetal force." It gives all of the forces directly acting on the ball.

Here are the following choices:
a. Tension and gravity
b. tension, gravity and centripetal force
c. Tension
d. Tension gravity centripetal force and frictional force

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One of your delivery trucks traveled 1,200 miles on 55 gallons of gas. How many miles per gallon did the truck get? (Round off your answer to the nearest hundredth.) A. 45.84
B. 21.81
C. 45.83
D. 21.82

Answers

The word "Per" means divide

"miles per gallon" is the same as "miles / gallon"

The truck went 1,200 miles
on 55 gallons

1,200 ÷ 55 = 21.81

Simply divide the two quantities to attain the correct unit.

1200 miles/55 gallons = 21.82 miles/gallon
The answer is D.

There are three kinds of levers. What makes them different from each other?

Answers

Every lever and every class has a fulcrum, load, and effort. It helps move a heavy load.

Class one is when the fulcrum is the main acting force to help carry this weight.

Class two is when the person needs to put more effort to carry a weight.

Class three is when load itself helps carry a weight.

It all depends where the load, effort, and fulcrum are located. If the fulcrum is in the middle, it would be the most supportive force. If the fulcrum was at an edge, the effort or load would be the main forces of carrying, depending on their location. Location is important.

They all work synergistically to carry different things. They all help carry, but the different classes seperate them by fulcrum, effort, and load. Also note that the fulcrum is a very important part of a lever, without it, carrying a big box would be very heavy in the absence of a handler.

FULCRUM is the most important part! Remember that!

1. Seesaw . Fulcrum Middle That balances it
2. Wheelbarrow . Fulcrum is the wheel. Input = handles Output = objects inside wheelbarrow
3. Baseball bat . Fulcrum is the hands. Input = Bottom section of the bat. Output = top section of the bat with more force.

Plateau period are times in life when

Answers

Good morning Brianiac

Plateau period are times in life when there is no downhill or downhill happened in your life.

It was my pleasured to help you :0

An atom of carbon (C) forms covalent bonds with two atoms of oxygen (O) to form carbon dioxide. How are the valence electrons of these atoms rearranged to form the bonds?A. Electrons are transferred from the carbon atom to the oxygen atoms.
B. Electrons are transferred from the oxygen atoms to the carbon atoms.
C. Many valence electrons are shared between the atoms.
D. A few valence electrons are shared between the atoms

Answers

Answer : The correct option is C.

Explanation :

Covalent bond : Covalent bond forms when two non-metal atom share a pair of electrons.

In the covalent bond formation of carbon dioxide, carbon and oxygen atom share four pair of electrons. The carbon atom joined by four covalent bonds to two oxygen atoms.

The valence electrons in carbon atom = 4

The valence electrons in two oxygen atom = 2(6) = 12

Therefore, these atoms are rearranged to form the bonds by the sharing of many valence electrons between the atoms.

The lewis-dot structure of carbon dioxide is shown below.

Answer:

Person above me got it correct

Explanation:

The answer is C Many valence electrons are shared between the atoms

Just confirming :)

a skier is gliding along 3.0 m/s on horizontal, frictionless snow. he suddenly starts down a 10 degrees incline. his speed at the bottom is 15 m/s. what is the lenght of the incline? how long does it take him to reach the bottom?

Answers

... find length
(way 1) determine acceleration using force
only force act on skier is mg vertically. spilt vector we get force along the incline = mgsin(10) and f= ma so
ma = mgsin(10) or a = gsin(10)
a (along the incline)= gsin(10) = 10sin(10) = 1.74
v^2 = u^2 + 2as
15^2 = 3^2 + 2(1.74)s
s = 62.06 m

(way 2) using conservation of energy
energy (KE+PE) on top = energy at bottom
0.5m3^2 + mgh = 0.5m15^2 +0
h (height of incline) = (112.5 - 4.5)/10 = 19.8 m
length of incline = h/sin(10) = 62.2 m ; trigonometry

... find time
s = (u+v)t/2
t = 2s/(u+v) = 2(62.2)/(3+15) = 6.91 s

The Milky Way is located in the _____ Group. Andromeda Local Elliptical Spiral Virgo

Answers

The Milky Way is located in the "local" Group.

The Local Group is the galaxy group that incorporates the Milky Way. The Local Group involves in excess of 54 galaxies, the greater part of them predominate cosmic systems. Its gravitational focus is found somewhere close to the Milky Way and the Andromeda Galaxy. The Local Group has a breadth of 10 Mly (3.1 Mpc) (around 1023 meters) and has a paired (dumbbell) distribution. The gathering itself is a piece of the bigger Virgo Supercluster, which might be a piece of the Laniakea Supercluster.

Final answer:

The Milky Way is located in the Local Group of galaxies and is a spiral galaxy. More than 54 galaxies including Andromeda and the Milky Way are in the group.

Explanation:

The Milky Way is located in the Local Group of galaxies. This group is a collection of more than 54 galaxies, including the Andromeda and Milky Way galaxies, which are the two largest galaxies in the group. The Milky Way is a spiral galaxy, which means it has a flat, spinning disk with a central bulge surrounded by spiral arms. Despite its presence in the Local Group, the Milky Way has no direct connection to the Elliptical or the Virgo groups.

Learn more about Milky Way's location here:

brainly.com/question/34896557

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