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
Elza [17]
3 years ago
13

Three short square wood blocks measuring 3.5 per side support a machine weighing 29500 lbs. What is the compressive stress in th

e blocks
A. 798lbs
B. 421lbs
C. 1404lbs
D. 803lb
Physics
1 answer:
Ilya [14]3 years ago
4 0

Answer:

D. 803 lbs

Explanation:

In order to find the compressive stress on all three blocks we first need to find the normal surface area of each:

Surface Area of 1 Block = 3.5 x 3.5

Surface Area of 1 Block = 12.25

Surface Area of all 3 Blocks = A = 3 x 12.25

Area = 36.75

Now, the stress is given by the following formula:

Stress = Force/Area

Stress = 29500 lbs/36.75

Stress = 802.72 lbs

Hence, the correct option will be:

<u>D. 803 lbs</u>

You might be interested in
What is the force of gravity acting on a 1-kg m mass? (g = 9.8 m/s ^ 2)
Ksenya-84 [330]

Answer: Use this F=Ma.

Explanation: So your answer will be

F=1 Kg+9.8 ms-2

So the answer will be

F=9.8N

How'd I do this?

I just used Newton's second law of motion.

I'll also put the derivation just in case.

Applied force α (Not its alpha, proportionality symbol) change in momentum

Δp α p final- p initial

Δp α mv-mu (v=final velocity, u=initial velocity and p=v*m)

or then

F α m(v-u)/t

So, as we know v=final velocity & u= initial velocity and v-u/t =a.

So F α ma, we now remove the proportionality symbol so we'll add a proportionality constant to make the RHS & LHS equal.

So, F=<em>k</em>ma (where k is the proportionality constant)

<em>k</em> is 1 so you can ignore it.

So, our equation becomes F=ma

7 0
3 years ago
A concave mirror is also known as converging mirror
Usimov [2.4K]

Answer:

true

Explanation:

they have a reflecting surface that is recessed inward

7 0
3 years ago
This tasty snack starts as a kernel and is “popped” then
Veronika [31]
Popcorn can be popped by either of the three forms of heat transfer:

Conduction in a pan with hot oil on a stove element.

Convection by an air popper and warm air rising over a heating element... no direct contact with heat source.

Radiation is what occurs in a microwave. Invisible radiant heat activates water molecules in the popcorn.

All the above heat the kernel over 100 Celsius. Water vaporizes/boils (latent heat) and erupts through the kernel.

Mmmm popcorn watch out for the lipids (fat in the oil and butter)
6 0
3 years ago
The strategy used by US forces to win the war on the Pacific was called
Y_Kistochka [10]
This strategy was known as "Island hopping"
4 0
3 years ago
Why is the core the only layer of the Sun where energy is produced?
son4ous [18]

Answer:

The core is the only layer of the Sun where energy is produced because that is where the fusion process occurs between hydrogen and helium atoms.There, the hydrogen atoms being converted into helium molecules.

HOPE IT HELPS!

6 0
4 years ago
Read 2 more answers
Other questions:
  • How much heat, in joules and in calories, must be added to a 75.0–g iron block with a specific heat of 0.449 j/g °c to increas
    6·1 answer
  • An artificial satellite circles the Earth in a circular orbit at a location where the acceleration due to gravity is 6.25 m/s2.
    10·2 answers
  • A 43.9-g piece of copper (CCu= 0.385 J/g°C) at 135.0°C is plunged into 254 g of water at 39.0°C. Assuming that no heat is lost t
    8·2 answers
  • Which is not a factor that affects the pressure of a gas in a closed container?
    12·1 answer
  • When an object is electrically polarized
    5·1 answer
  • Linh builds a circuit from the diagram shown. Which bulb could Linh remove from the circuit to make all of the other bulbs stop
    9·2 answers
  • Mega rayquaza and zygarde 100% form vs lunala, solgaleo, and red's mega charizard
    5·1 answer
  • Two charged point-like objects are located on the x-axis. The point-like object with charge q1 = 4.60 µC is located at x1 = 1.25
    7·1 answer
  • 7. Sanitizing method that are uses chlorine, iodine, and quaternary ammonium. A. ) heat C.) cooking B) chemicals D.) detergent​
    12·1 answer
  • A bicyclist, initially at rest, begins pedaling and gaining speed steadily for 4.90s during which she covers 32.0m.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!