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
love history [14]
3 years ago
15

A fountain shoots a jetof water straight up. The nozzle is 1 cm in diameter and the speed of the water exiting the nozzle is 30

m/s. What is the force exerted by the water jet
Physics
1 answer:
asambeis [7]3 years ago
6 0

Answer:

Explanation:

mass of water coming out per second = A x v where A is area of cross section of the nozzle and v is velocity of water

A = 3.14 x .005²

= 785 x 10⁻⁷ m²

mass of water coming out per second = 785 x 10⁻⁷ x 30 = 23.55 x 10⁻⁴ kg

momentum of this mass = 23.55 x 10⁻⁴ x 30 = 706.5 x 10⁻⁴ kg m /s .

Rate of change of momentum  = 706.5 x 10⁻⁴

Let force be F

F - mg = 706.5 x 10⁻⁴

F = mg + 706.5 x 10⁻⁴

F =  23.55 x 10⁻⁴  x 9.8 + 706.5 x 10⁻⁴

= 937.3 x 10⁻⁴ N .

You might be interested in
What is the average speed of a car that traveled 222.0 miles in 4.596 hours?
vivado [14]
48.3 mph
If you need more answers like this I suggest countcalculate .com
4 0
3 years ago
What evidence supports the conclusion that a chemical reaction has occurred?
GalinKa [24]

Answer:

Precipitation formed

Temperature change

fizzing and hissing

bubbles

change in state

Explanation:

3 0
2 years ago
A 3.00 kg mass is traveling at an initial speed of 25.0 m/s. What is the
Nitella [24]

Answer:

The magnitude of the force required to bring the mass to rest is 15 N.

Explanation:

Given;

mass, m = 3 .00 kg

initial speed of the mass, u = 25 m/s

distance traveled by the mass, d = 62.5 m

The acceleration of the mass is given as;

v² = u² + 2ad

at the maximum distance of 62.5 m, the final velocity of the mass = 0

0 = u² + 2ad

-2ad = u²

-a = u²/2d

-a = (25)² / (2 x 62.5)

-a = 5

a = -5 m/s²

the magnitude of the acceleration = 5 m/s²

Apply Newton's second law of motion;

F = ma

F = 3 x 5

F = 15 N

Therefore, the magnitude of the force required to bring the mass to rest is 15 N.

4 0
3 years ago
You are walking at 3.75 km per hour across a frozen lake in the snow. You do not realize that with each step you turn 0.350 degr
VladimirAG [237]

Answer:

242.27929622673 meters

5 0
3 years ago
QUICK PLZ I NEED TO TURN IT IN
Anni [7]
The answer i got is 133.3 but i’m not completely sure . I got that because to get velocity i’m pretty sure it’s distance over time. So in between 8 and 10 minutes it’s 9 minutes. I pretty much just did 1200 divided by 9.
8 0
3 years ago
Read 2 more answers
Other questions:
  • The earth exerts a force of 500 newtons on an object what is the mass of the object in kg
    8·1 answer
  • How much power does a hair dryer require to transform 198 000 J of energy in 15 mins?
    9·1 answer
  • Aray diagram is shown.<br> What does the letter red line represent?
    13·1 answer
  • Which quantity is a vector quantity?
    7·1 answer
  • The noble gases are the least ____ of any elements on the periodic table. The___ form acidic compounds with hydrogen. The haloge
    12·2 answers
  • PLEASE HELP WITH ONE QUESTION!
    7·1 answer
  • How does a proper warm up affect blood flow
    14·1 answer
  • How do you think the weight and the lift should not be one of the same magnitude​
    5·1 answer
  • What is the acceleration of a 4,000 kg car pushed with a<br> force of 12,000 N?
    7·2 answers
  • A wire is joined to points X and Y in the circuit diagram shown. A diagram of a circuit with a power source on the left. Directl
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!