PHYSICS HIGH SCHOOL

A cart travels down a ramp at an average speed of 5.00 centimeters/second. What is the speed of the cart in miles/hour?

Answers

Answer 1
Answer: A cart travels down a ramp at an average speed of 5.00 centimeters/second. What is the speed of the cart in miles/hour?   To solve this problem we have set the conversion values to determine the product during the conversion process.
1.   1 centimeter = 0.00000621371 mile
2.    1 hour = 60 minutes 3.    1 minute = 60 seconds
Thus, we shall have
1.   5 cm x 0.00000621371 mile/1cm = 0.000031069 mi
2.   0.000031069 seconds x 1 hr / 3600 = 0.111846815 miles / hr  



Answer 2
Answer:

Answer:

about 2 miles an hour

Explanation:


Related Questions

MIDDLE SCHOOL

How could pig xenotransplantation affect humans? A
It could cause them to die waiting for a transplant.
B
It could cause them to catch animal diseases.
C
It could lead to harvesting of human organs.
D
It could lead to pigs being easier to breed.

Answers

It could cause them to catch animal disease

Explanation:

Xenotransplantation refers to the transplantation of organs or tissues between different species. E.g. Chimpanzee organ (liver) being transplanted into a human body would come under the category of xenotransplantation.

Pigs have come up as prospective organ donors since their organs and tissues are more or less to that of human’s. However, there are issues such as-

  1. Xenotransplantation of pig’s tissue into a human would allow easier passage for all types of zoonotic viruses.
  2. Moreover, if transgenic pigs are used instead of natural pigs it can lead to virus mutation as per the human body demands thus leading to increased susceptibility to human infection.

Thus,  engrafting of pig’s tissue in the human body poses a significant risk for humans of catching a zoonotic (animal) disease.

HIGH SCHOOL

A system is said to be closed if _____ the system. A. The momentum of each object remains constant in

B. Objects cannot enter or leave

C. Objects can enter, but not leave

D. No net force acts on

Please help, this is an important question and I haven’t learned about it! I’ll give Brainiest if you explain your thinking and I like your answer!

Answers

No net force acts on it.example is the earth
MIDDLE SCHOOL

Tasha rolls a 7.0 bowling ball down down the alley for the league championship. One pin is still standing, and Jeanne hits it head-on with a velocity of 9.0 m/s . The 2.0pin acquires a forward velocity of 14.0m/s. . What is the new velocity of the bowling ball

Answers

Answer:5

Explanation:

Let be the velocity of the bowling ball before collision.

Let be the velocity of the pin before collision.

Let be the velocity of the bowling ball after collision.

Let be the velocity of the pin after collision.

Let be the mass of the bowling ball.

Let be the mass of the pin.

According to the conservation of momentum,

Given,

New velocity of bowling ball is

HIGH SCHOOL

PLEASE HURRY PLEASE 1. Think about chemical reactions in your everyday life. How might it help to know about different types of chemical reactions?



2. Consider the equation A + B --> AB. Can you think of another situation you have encountered (outside of this course) where a process in this general form takes place?



3. Describe a chemical reaction that you have recently witnessed. How did you know that it was a chemical reaction? What type of chemical reaction do you think it was?

Answers

1. Burning woods, coals, patrol or gasolines are examples of different types of chemical reactions in daily day life.

2. In burring coals in air: carbon and oxygen reacts and forms carbon dioxide. This is a situation where equation A + B --> AB can be encountered.

C + O₂ → CO₂.

3. Burning a coal is the chemical reaction that recently be witnessed. In this case, the product  carbon-di-oxide has different physical and chemical properties compere to both carbons and oxygens.

What is Chemical reaction?

Chemical reactions are the processes by which a substance or substances change chemically to create a new substance or substances with entirely new attributes. Products are completely distinct in nature and identity from reactants.

Burning material in the presence of oxygen to create heat and light is called combustion. For instance, when carbon molecules burn in the presence of oxygen, they are transformed into carbon dioxide and water, making combustion a chemical reaction in which the initial reactant's chemical makeup is altered and a new chemical compound is created.

Learn more about chemical reaction here:

brainly.com/question/29039149

#SPJ2

1. cooking is changing the food like an egg, making a fire is also a form of chemical reaction.

2. i am sorry i do not believe i know this one again sorry.

3.A baking soda volcano. The chemical reaction between baking soda (sodium bicarbonate) and vinegar (acetic acid) produces carbon dioxide gas.

HIGH SCHOOL

If the 50.0 kg boy were in a spacecraft 5r from the center of the earth, what would his weight be? (use the 50.0 kg boy for significant figures)

Answers

The boy weighs 50.0 kg when he is 1R from the center of the Earth. To get his weight  5R away, we can use the formula:

= G * m1 * m2 / 

Where G, m1, and m2 are constants. By ratio and proportion:

 * (= 50.0 kg * 9.81 m/ * (

Canceling R on both sides and by computation:

= 19.6 N

Answer:

19.6 N

Explanation:

Hope this helps.

MIDDLE SCHOOL

Measuring the size of a spefic object might include which of these SI units? A.meter ,sound
B.candela,mole
C.kilogram,ampere
D.meter,killogram

Answers

Choice D - meter is a the unit of measure for length and kilogram is for mass.

D meter,kilogram

is the

right

choice...

Buona fortuna amici!!!

HIGH SCHOOL

Jessie and Julie, the twins, often make baked goods to sell at various club events. The family has agreed to let them choose the bakeware. Julie wants to buy metal bakeware with a nonstick finish to make cleanup easier. Jessie wants to buy glass bakeware because it is easier yo use than metal. Point out any false reasoning that you find. You may recommend one of the items they mention, or suggest something entirely different.

Answers

They choose something realy different at first they said a nother thing then they said something else i am confused about thise 
COLLEGE

A well hole having a diameter of 5 cm is to be cut into the earth to a depth of 75 m. Determine the total work (in joules) required to raise the earth material to the surface if the average mass of 1 m is 1830 kg. (Data: g = 9.81 m/s) (Hint: How much work is required to raise a volume of ad/4 x dx from a depth of x feet to the surface?

Answers

Answer:

total work is 99.138 kJ

Explanation:

given data

diameter = 5 cm

depth = 75 m

density = 1830 kg/m³

to find out

the total work

solution

we know mass of volume is

volume =

volume =

so

work required to rise the mass to the height of x m

dw = gx dx

so total work is integrate it with 0 to 75

w =

w = × 0.05² × 1830× 9.81×

w = 99138.53 J

so total work is 99.138 kJ

COLLEGE

A car traveling 75 km/h slows down at a constant 0.50 m/s2 just by "letting up on the gas." calculate (a) the distance the car coasts before it stops, (b) the time it takes to stop, and (c) the distance it travels during the first and fifth seconds.

Answers

The distance covered in the fifth second is 23.05 m.

We have to convert the initial velocity to m/s as follows;

75 × 1000/3600 = 20.8 m/s

Given that;

v^2 = u^2 - 2as

When v = 0 m/s

u^2 = 2as

s = u^2/2a

s = (20.8 m/s)^2/2 × 0.50 m/s2

s = 432.6 m

The time taken to stop is obtained from;

v = u - at

v = 0

u = at

t = u/a = 20.8 m/s/ 0.50 m/s2

t = 41.6 seconds

Distance covered in the first second;

s = ut + 1/2at^2

s =  20.8(1) + 1/2 (0.50) (1)^2

s = 21.05 m

Distance covered after five seconds;

s = 20.8(5) + 1/2 (0.50)(5)^2

s = 104 + 6.25

s= 110.25 m

Distance covered after four seconds;

s = 20.8(4) + 1/2 (0.50)(4)^2

s = 83.2 + 4 =87.2 m

Distance covered in the fifth second = 110.25 m - 87.2 m = 23.05 m

Learn more about equations of motion: brainly.com/question/8898885

Solution:

At 1st convert km/h to m/s. 1 km = 1000 m, 1 h = 3600 s, 1 km/m = 1000/3600 = 5/18 m/s  

Initial velocity = 75 * 5/18 = 20.8 m/s  

The car’s velocity decreases from 20.8 m/s to 0 m/s at the rate of 0.5 m/s each second. We have the final velocity, initial velocity, and the acceleration.  

Now according to the equation determine the distance.  

vf^2 = vi^2 + 2 * a * d  

a = -0.5 m/s^2  

0 = 20.8^2 + 2 * -0.5 * d  

so d = 431.64 m  

since we have the final velocity, initial velocity, and the acceleration. Use the following equation to determine time.  

vf = vi + a * t  

0 = 20.8 – 0.5 * t  

Solve for t = 41 seconds  

(c) the distance travels by it during the first and fifth second are.  

d = vi * t + ½ * a * t^2  

d1 = 20.8 * 1 – ½ * 0.5 * 1^2 = 20.55 m  

The easiest way to the distance for the 5th second is:

d = vi * t + ½ * a * t^2, a = -0.5  

d5 = 20.8 * 5 – ½ * 0.5 * 5^2 = 91.5 m  

d6 = 20.8 * 6 – ½ * 0.5 * 6^2 =  106.8m

d6 – d5 = 15.3 m  

this is the required solution.


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