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statuscvo [17]
2 years ago
7

Because energy is conserved, we can calculate kinetic or potential energy at all times if we know one or the other at different

times. For example, if a car on a roller coaster has 1000J of potential energy when its parked at the top of the ride, and later it only has 100J of potential energy, we know that it must have 1000-100=900 joules of Potential energy at that later time.
If the car has 250J of potential energy at some point in the ride, how much kinetic energy does it have?

a
750
b
100
c
850
d
7
e
200
Mathematics
1 answer:
trasher [3.6K]2 years ago
4 0

Answer:

ohh what's the topic

Step-by-step explanation:

its so hard hahhahahahah

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Would appreciate the help
raketka [301]

Answer:

x° = 37°

Step-by-step explanation:

* Lets revise some facts of a circle

- The secant is a line intersect the circle in two points

- If two secants intersect each other in a point outside the circle,

 then the measure of the angle between them is half the difference

 of the measures of their intercepted arcs

* Now lets solve the problem

- There is a circle

- Two secants of this circle intersect each other in a point outside

  the circle

∴ The measure of the angle between them = 1/2 the difference of the

  measures of their intercepted arcs

∵ The measure of the angle between them is x°

∵ The measures of their intercepted arcs are 26° and 100°

- Use the rule above to find x

∴ x° = 1/2 [ measure of the large arc - measure of small arc]

∵ The measure of the large arc is 100°

∵ The measure of the small arc is 26°

∴ x° = 1/2 [100 - 26] = 1/2 [74] = 37°

∴ x° = 37°

4 0
3 years ago
To wash a window that is 12 feet off the ground, Wayne leans a 13-foot ladder against the
AlladinOne [14]

Answer:

5 meters

Step-by-step explanation:

Based on the situation, it forms into a right triangle. So we will apply the Pythagorean Theorem here. The ladder acts as the hypotenuse while the height from the ground to the window serves as our side "a". We are tasked to solve for "b". Side "b" is the distance from foot of side a to the tip of side c which is the hypotenuse (ladder). We will derive the formula below to solve for b.

c = √( a² + b² )

c² = a² + b²

b² = c² - a²

b = √ ( c² - a² )

b = √ ( 13² - 12² )

b = 5 meters

Correct me if I'm wrong. I hope it helps.

3 0
2 years ago
What is the volume of metal in the pipe? Use 3.14 for a and
aleksandr82 [10.1K]
I need another number for this problem to answer
4 0
3 years ago
Read 2 more answers
Hw 24 area of parallelogram
Papessa [141]

Answer:

<h2>The width, x, of this parallelogram is 16 cm.</h2>

Step-by-step explanation:

In #14, the area of the parallelogram is 528 cm².

This area is also the value of the formula A = L·W:

A = 528 cm² = (33 cm)·W

To determine the width, W, of this parallelogram, we perform the following division:

W = (528 cm²) / (33 cm) = 16 cm

The width, x, of this parallelogram is 16 cm.

7 0
3 years ago
How many square meters of brick pavements must be laid out for a 4 meter wide walk around a circular flower bed 22 meters wide i
Ronch [10]

Answer:

603.2 meters

Step-by-step explanation:

circle - the outside of the walk in this case. This circle has a

diameter of 22 + 8 m, therefore a radius of 15m. The inner circle

has a diameter of 22m - as given - a radius of 11m.

You subtract the area of the inner circle from that of the larger circle.

4 0
2 years ago
Read 2 more answers
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