MATHEMATICS MIDDLE SCHOOL

A Cart at the top of a 300m hill has a mass of 40kg. what is the carts gravitational potential energy?

Answers

Answer 1
Answer:

Answer:

The cart gravitational potential energy is 117,600 Joule

Step-by-step explanation:

First lets define what a gravitational potential energy is.

A gravitational potential energy is the energy stored in an object that rise above a certain height surface.

The formula for calculating the gravitational potential energy(P.E) is m×g×h, where m is the mass of the object measured in kilograms(kg), g is the acceleration due to gravity measured in *(m/s²). It is a constant and always equal to 9.8 m/s²   on the earth surface and h is the height of the object above the surface in (m).

The gravitational potential energy is measured in Joules(J).

From the question, mass(m) is given as 40 kg  and the height(h) is 300m

and g=9.8m/s²

Gravitational Potential Energy(P.E) = m×g×h

                                                          =40 ×9.8 ×300

                                                          =117,600 Joules.

Therefore the cart gravitational potential energy is 117,600 Joules.

                                                     
Answer 2
Answer: g.p.e = mgh
m for mass = 40 kg
g for gravitational field strength = 10 N/kg
h for height = 300m

Plug them in:
g.p.e = 40 × 10 × 300
         = 120000 J
In terms of kilo joule:
1 kJ = 1000 J
so 120000 J = 120 kJ

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Find sum of 3/4/8 and 1/3/4 in simplest form

Answers

LCM is the lowest common multiple and the simplest form is (1)/(3).

What is the least common divisor?

The LCM (Lowest Common Multiple) of two or more numbers is the smallest number among all common multiples of the provided numbers.

In contrast, the HCF (Highest Common Factor) is the highest number among all the common factors of the given numbers.

Here given that

(3)/(4),(3)/(8),(1)/(3),(1)/(4)

The least common denominator of  (3)/(4),(3)/(8),(1)/(3),(1)/(4) is 4,8,3,4.

Now, make a denominator is same,

(3)/(4(6))+(3)/(8(4))+(1)/(3(8))+(1)/(4(6))\n=(3)/(24)+(3)/(24)+(1)/(24)+(1)/(24)\n\n=(3+3+1+1)/(24)\n=(8)/(24)\n=(1)/(3)

Hence, the simplest form is (1)/(3).

To know more about LCM

brainly.com/question/20380514

#SPJ2
If I'm reading this correctly, you're asking for 3/4/8 + 1/3/4. *whips out calculator*

3 divided by 4=.75
.75 divided by 8=.09375=3/32

1/3 divided by 4 = 1/12

3/32 + 1/12 = 17/96 < simplest form

Just use a good calculator. o3o

*If you have to show your work, find common denominators and simply your answers.

How many pounds is 7 ounces?

(Also I want to know how you got it!)

Answers

0.4375 pound. 0.0625 times 7.
little over 1/2 a pound becuse ther 16 oz. in a pound

Maria solved the area problem below. What was her error?(
1
2
) (25.5)(30) (
1
5
) = 76.5cm²

Maria solved the area problem below. What was her error?


She found the perimeter.
She forgot to square the scale factor.
She forgot to multiply by One-half for the area of the triangle.
She should have divided by the square of the scale factor.

Answers

Answer:

b

Step-by-step explanation:

Answer:

o my quizlet page its b

Step-by-step explanation:

Inez wants to buy a skateboard but she does not know if she has enough money. The price of the skate board is $80 and the sales tax is 7% what will be the total cost of the skate board

Answers

so here is what I think you mabey need to add so the answer is 87$$ hope I helped you

Graph y= –3x+4 .
i have it on negative 3 and positive 4

Answers

y=-3x+4 graphed looks like this.

Remeber y=mx+b, m is the slope, and b is the y-intercept.

What is 1/5 of £3.00 please

Answers

3.00 /5 = 0.6 pound  :))
i hope this be helpful
3.00 pounds* (1/5)= 0.6 pound.

1/5 of 3.00 pounds is 0.6 pound~
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