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
Pie
3 years ago
12

4. O/N 15/P11/Q11

Physics
1 answer:
anygoal [31]3 years ago
5 0

Answer:

B) 4500 Pa

Explanation:

As pressure is force per unit area,

P = F/A

It stands to reason that the smallest pressure for a given force is when it is shared by the largest area.

The possible areas are

0.30(0.40) = 0.12 m²

0.30(0.50) = 0.15 m²

0.40(0.50) = 0.20 m²

The pressure when the face with the largest area (0.20 m²) is down is

P = 900 / 0.20 = 4500 N/m² or 4500 Pa

the other possible pressures would be

900/0.15 = 6000 Pa

900/0.12 = 7500 Pa

which are both larger than our solution.

You might be interested in
Could you please explain to me Newton's second law of motion? Please I don't get it :/
MissTica

Answer:

Newton's second law states that when a body of mass m is accelerated with force f

then F=ma

this means acceleration of an object depends on both force with which it is moving as well as its mass

8 0
3 years ago
You drop a ball from a height of 2.0 m, and it bounces back to a height of 1.5 m. a) What fraction of its initial energy is lost
tangare [24]
The fraction of energy that is lost is 25%, it depends how fast the ball was going until it lost 25% of its energy, the gravitational energy was transferred into the kinetic energy that helped the ball bounce back
4 0
3 years ago
Two families meet at the park at 10:00am. Each family uses a different way of transportation to get there. The Gonzalez family l
pav-90 [236]

Firstly, we need to make the times and distance equal to compare.

1hr=60mins
Gonz drove 90km in 60mins,so they would drive 45km in 30 mins dividing it by 2.
Because the Rivs had gone 30km in 30mins, Gonz were faster.

For the adverage speed, we should first add the speed of each family in mph , so 90+60, which equals 150 and divide that by 2 because there are 2 speeds so the average speed is 75mph.

P.S English is my second language so tell me if you don't understand something and I will try and explain.
5 0
3 years ago
Does mechanical advantage have units? Explain your answer.
motikmotik

Answer:

The mechanical advantage of a machine is the ratio of the load (the resistance overcome by a machine) to the effort (the force applied). For an ideal (without friction) mechanism, it is also equal to: There is no unit for mechanical advantages since the unit for both input and output forces cancel out.

Explanation:

6 0
3 years ago
Read 2 more answers
Explain why, in terms of forces, there is a risk of head injury when diving from this height. Suggest why the high divers would
podryga [215]

Answer:

Due to lower risk of injury or damage.

Explanation:

The high divers would choose to enter the water from the feet first because there is low risk of injury. The brain is the most important part of the body which very sensitive to any small injury. Small injury to brain leads to big problems in life. High divers can reach speeds of nearly 60 mph and enters about 28m into the water in about three seconds which can damage the head region if comes in contact with the ground so this is the reason the high divers avoid of entering in the water through their heads and choose entering through their feet.

4 0
3 years ago
Other questions:
  • What is N{2}+H{2}=NH{3}
    9·1 answer
  • 4. A tankful of liquid has a volume<br>of 0.2m3. What is the volume in (a)<br>lities (b) cm3 (c)ml​
    6·1 answer
  • What is the momentum of a 500-kg car moving at 10 m/s?
    11·2 answers
  • A solid block of mass m2 = 1.14 kg, at rest on a horizontal frictionless surface, is connected to a relaxed spring (with spring
    13·1 answer
  • A ball is dropped from the top of an eleven-story building to a balcony on the ninth floor. In which case is the change in the p
    6·1 answer
  • An apple in a tree has a gravitational store of 8J. As it falls, it accelerates constantly until it hits the ground. What is the
    8·1 answer
  • A cart is propelled over an xy plane with acceleration compo- nents ax 4.0 m/s2 and ay 2.0 m/s2. Its initial velocity has com- p
    11·1 answer
  • When density increases, what happens to the number of molecules in a volume of air?
    5·1 answer
  • this planet has a very toxic atmosphere that traps heat, making it the hottest planet in the solar system.
    15·1 answer
  • Calculate the weight of the wooden cube.<br>thanks i will rate you 5 star after answer is given...​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!