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
Damm [24]
3 years ago
11

While traveling on a dirt road, the bottom of a car hits a sharp rock anda small hole develops at the bottom of its gas tank. If

the height of the gasoline in thetank is 35 cm, determine the initial velocity of the gasoline at the hole. Discuss howthe velocity will change with time and how the flow will be affected it the lid of thetank is closed tightly.
Physics
1 answer:
tester [92]3 years ago
5 0

Answer:

6.86 m/s

Explanation:

velocity of the gasoline through the hole would be

v = \sqrt {2gh}\\v = \sqrt {2\times 9.8\times 0.35} =6.86 m/s

As the height would decrease, the velocity of the flow would decrease.

If the lid of the tank would be closed, the pressure would reduce. so, again the velocity of the flow would reduce.

You might be interested in
6. A girl pushes her little brother on his sled with a force of 300 N for 750 m.
Oduvanchick [21]

w=225000 J  

E=225000 J  

P=9000 W  

P=22500 W

Ew=Fd=E  

P=E/t

5 0
3 years ago
If grade 7 students learn six periods and if one period is 40 minutes then how many seconds they learn per day
Ludmilka [50]

Answer:

C. 14400

Explanation:

40min × 6 periods = 240mins total.

1 minute = 60 seconds.

240 minutes × 60 = 14400 seconds.

6 0
3 years ago
Read 2 more answers
A transverse wave on a string is described by the wave function
svp [43]

The period of the transverse wave from what we have here is 0.5

<h3>How to find the period of the transverse wave</h3>

The period of a wave can be defined as the time that it would take for the wave to complete one complete vibrational cycle.

The formula with which to get the period is

w = 4π

where w = 4 x 22/7

2π/T = 4π

6.2857/T = 12.57

From here we would have to cross multiply

6.2857 = 12.57T

divide through by 12.57

6.2857/12.57 = T

0.500 = T

Hence we can conclude that the value of T that can determine the period based on the question is 0.500.

Read more on transverse wave here

brainly.com/question/2516098

#SPJ4

5 0
1 year ago
A green plant absorbs light a frog eats flies these are both examples of how organisms
Llana [10]
I think I can answer your question since I've worked on this before. Your answer should be obtain energy. If your answer choices were; obtain energy escape predators produce offspring excrete waste
7 0
3 years ago
A 25 kg bear slides, from rest, 12 m down a lodgepole pine tree, moving with a speed of 5.6 m/s just before hitting the ground.
Anuta_ua [19.1K]

Answer:

(A) -2940 J

(B) 392 J

(C) 212.33 N

Explanation:

mass of bear (m) = 25 kg

height of the pole (h) = 12 m

speed (v) = 5.6 m/s

acceleration due to gravity (g) = 9.8 m/s

(A) change in gravitational potential energy (ΔU) = mg(height at the bottom- height at the top)

height at the bottom = 0

         = 25 x 9.8 x (0-12) = -2940 J

(B) kinetic energy of the Bear (KE) = 0.5mv^{2}

           = 0.5 x 25 x 5.6^{2}  = 392 J

(C) average frictional force = \frac{change in thermal energy}{height} = \frac{-(ΔKE+ΔU)}{h}

  • change in KE (ΔKE) = initial KE - final KE
  • ΔKE = 0.5mv^{2} - 0.5mvf^{2}            
  • when the Bear reaches the bottom of the pole, the final velocity (Vf) is 0, therefore the change in kinetic energy becomes  ΔKE = 0.5x25x5.6^{2} - 0 = 392 J

 \frac{-(ΔKE+ΔU)}{h}[/tex] = \frac{-(392 + (-2940))}{12}

=  \frac{(-392 + 2940)}{12} = 212.33 N

5 0
3 years ago
Other questions:
  • The basketball coach tells his team to run sprints back and forth across the court, which is 30 m long. They start at the left e
    5·1 answer
  • It is important to organize your data because
    11·1 answer
  • Ryan wants to use the fermi process to estimate the number of basketballs that would fill a gymnasium. as part of the process, h
    12·2 answers
  • What is the name for the area of dust and debris which orbited the young sun and eventually became planets and moons?
    10·2 answers
  • A golf ball is given an initial speed of 20. meters
    11·2 answers
  • Suppose the sphere is electrically neutral. Is it attracted to
    9·1 answer
  • I AM THE RED BLOOD CELL STORY<br> My manufacturing process goes by a fancy name of _______.
    7·2 answers
  • How can you protect yourself from the Virus?
    5·2 answers
  • A simply supported beam, 4" wide, 6" deep, and 16 ft. long carries a uniformly distributed load of 300 lb/ft (a) compute the she
    14·1 answer
  • What is the gravitational acceleration close to the surface of a planet with a mass of 9ME and radius of 3RE, where ME and RE ar
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!