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
Stolb23 [73]
2 years ago
5

A dog exerts a force of 30N to move a wagon 2m in 5s. What is the power of the dog? help me

Physics
2 answers:
PolarNik [594]2 years ago
4 0

Answer:

i do not know

Explanation:

im doing for education too

BlackZzzverrR [31]2 years ago
3 0

Answer:

I don't know too . want to help but I don't know how .

Explanation:

sorry bro . I want to have points eeek . :/

You might be interested in
Raghu studies in grade 6th. He wants a cricket bat to be made by a carpenter. He tells the
kvasek [131]

Based on the information given, it can be noted that the bat was either shorter or longer than what he expected.

From the information given, it was stated that Raghu wants a cricket bat to be made by a carpenter and he tells the carpenter that the length of the bat should be 7 hand spans.

Since he got disappointed when he collected the bat, the reason for this will be because the bat was either shorter or longer than what he requested.

Learn more about length on:

brainly.com/question/25292087

8 0
2 years ago
Rays of light strike a bumpy road and are reflected.
ser-zykov [4K]

Answer:

last option is the correct one

6 0
3 years ago
Read 2 more answers
imagine riding a single-speed bicycle. why do you have to push harders on the pedals to start the bicycle moving than to keep it
Flura [38]
A large force is required to accelerate the mass of the bicycle and rider. Once the desired constant velocity is reached, a much smaller force is sufficient to overcome the ever-present frictional forces. 
3 0
2 years ago
- A fridge has a maximum static friction force
Dennis_Churaev [7]

Answer:

They will move the fridge if they all push in the same direction, but it will not move with constant velocity

Explanation:

The maximum static friction force is

F_f = -250 N (negative sign since its direction is opposite to the push applied by the people)

Sam can apply a force of 130 N, while Amir and Andre can apply a push of 65 N each, so the total force that they can apply, if they push in the same direction, will be:

F=130 + 65 +65=260 N

This force is larger than the frictional force, so the fridge will start moving.

However, the net force on the fridge will be:

\sum F = 260 N - 250 N = 10 N

And according to Newton's second law,

\sum F = ma

where m is the mass of the fridge and a its acceleration, since the net force is not zero, then the fridge will have a non-zero acceleration, so it will not move with constant  velocity.

3 0
3 years ago
Water initially at 200 kPa and 300°C is contained in a piston–cylinder device fitted with stops. The water is allowed to cool at
netineya [11]

Answer:

Δu=1300kJ/kg  

Explanation:

Energy at the initial state

p_{1}=200kPa\\t_{1}=300^{o}\\u_{1}=2808.8kJ/kg(tableA-5)

Is saturated vapor at initial pressure we have

p_{2}=200kPa\\x_{2}=1(stat.vapor)\\v_{2}=0.8858m^3/kg(tableA-5)

Process 2-3 is a constant volume process

p_{3}=100kPa\\v_{3}=v_{2}=0.8858m^{3}/kg\\u_{3}=1508.6kJ/kg(tableA-5)

The overall in internal energy

Δu=u₁-u₃

We replace the values in equation

Δu=u₁-u₃

=2808.8kJ/kg-1508.6kJ/kg\\=1300kJ/kg

Δu=1300kJ/kg  

3 0
2 years ago
Other questions:
  • Investigations allow for the control of variables.
    12·1 answer
  • An apple is pushed across a table with a velocity of 3.74 m/s rolls too far and falls 0.89
    6·1 answer
  • Bill is throwing a football at four targets and attempting to knock them over. Which of the following targets will be hardest fo
    6·1 answer
  • A certain microwave has a
    10·1 answer
  • A worker stands still on a roof sloped at an angle of 35° above the horizontal. He is prevented from slipping by static friction
    14·1 answer
  • A 14-Ω coffee maker and a 14-Ω frying pan are connected in series across a 120-V source of voltage. A 20-Ω bread maker is also c
    14·1 answer
  • 17
    13·1 answer
  • Which of the following best describes entropy
    11·1 answer
  • the SI and CGS unit of force are newton and dyne respectively haow many dynes are equal to one newton​
    14·1 answer
  • 1)A chocolate bar measures 10 cm long by 2 cm wide and is 2 cm thick
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!