1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
serg [7]
3 years ago
9

With the beam being held still at a height of 40 m, the crane breaks and the beam falls to the ground. Assuming no air resistanc

e, how much total energy will the beam have just as it hits the ground?
Mathematics
1 answer:
lapo4ka [179]3 years ago
8 0
What we have so far:
Kinetic energy = 0. The reason behind that is because the beam is not moving at a height of 40m.
Gavity, g = 9.8m/s²
Height = 40m
Potential energy = mgh; this is equal to 0 because m, stands for mass and in this problem, we do not have a value for the mass of the beam. Hence, 0 x 9.8m/s² x 40m = 0. Potential energy = 0.

Solution:
We will use the equation of Total energy:
TE = potential energy + kinetic energy

TE = 0 + 0

∴ TE = 0

The answer is: Assuming no air resistance, the total energy of the beam as it hits the ground is 0.
You might be interested in
Which fraction is greater than 1 /2 ? A) 1 /10 B) 1 /4 C) 2 /4 D) 3 /4
Varvara68 [4.7K]

Answer:

3/4

Step-by-step explanation:

1/2 = 2/4

3 0
3 years ago
Read 2 more answers
Select the correct symbol. 3.9 × 104 ? 8.7 × 102
mixas84 [53]
3.9
×104
_____
405.6



8.7
×102
_____
887.4
4 0
3 years ago
42 yards is the diameter what is the area of the circle
iris [78.8K]

Answer:

1385.4 sq yards

Step-by-step explanation:

The diameter is twice the radius. 42 divided by two is 21.

The area of a circle is found with the formula Pi *r^2.

21^2 * pi is approximately equal to 1385.4 sq yards

8 0
3 years ago
Read 2 more answers
Over the past several years, the owner of a boutique on Aspen Avenue has observed a pattern in the amount of revenue for the sto
NARA [144]

Answer:

  f(x) = 10500sin(π/6(x -3)) +39500

Step-by-step explanation:

The average of the maximum and minimum revenue is the vertical offset of the function, parameter D.

  D = (50,000 +29,000)/2 = 39,500

The amplitude of the function is the difference between the maximum and the offset.

  A = 50,000 -D = 50,000 -39,500 = 10,500

The horizontal scale factor B is a number that will be equal to 2π when x-C = 12:

  12B = 2π

  B = π/6 . . . . . . divide by 12

The horizontal offset is such that revenue is neutral and increasing at the value x=C. That will be in the month of March, when x=3, so C=3.

Now we have all the parameters, so we can write the equation:

  f(x) = 10500sin(π/6(x -3)) +39500

7 0
3 years ago
ILL GIVE BRAINLIEST FOR BEST AWNSER!!!
olga2289 [7]

Answer: AP= 30 kgm/s c) Calculate the final velocity of the object, if it was initially at rest. A 0.5kg baseball experiences a 10N force for a duration of 0.1s.

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • Use De Moivre's theorem to express cos 5θ and sin 5θ in terms of sin θ and cos θ.
    8·1 answer
  • Which is the solution to the inequality y+15 < 3
    7·1 answer
  • What is the reflection of an object referred to? post-image image transformation pre-image
    15·1 answer
  • Y varies directly with x. If x=150 and y=10 find y when x=60
    9·1 answer
  • Solve for the value of x
    13·2 answers
  • True or false, If false what would be the correct term to use?
    10·1 answer
  • This stuff I don’t understand .PLZZZZZZZ HELPPP MEEE
    9·1 answer
  • Simplify the expression<br><img src="https://tex.z-dn.net/?f=%28x%20%2B%207%29%28%20x%20%20-%202%29" id="TexFormula1" title="(x
    6·2 answers
  • Please send answers!!
    12·1 answer
  • Simplify the F = ABC + A’B + ABC
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!