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AlladinOne [14]
3 years ago
11

When an object appears to stay in place, it is called a

Physics
2 answers:
madam [21]3 years ago
8 0
This is called a reference point
mixer [17]3 years ago
5 0
<span>When an object appears to stay in place, it is called a Reference Point</span>
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Urgent ex 5 si 4 va rog mult
maks197457 [2]

Answer:

are you college ?????????

8 0
3 years ago
A cyclist bikes in a straight line at an average velocity of 22 miles/hour east and I’m finishing a 100 mile race how much time
Svet_ta [14]

Answer:

Below

Explanation:

To calculate the time it took for the cyclist to finish their race, you can you this equation :

     time = displacement / velocity

Plug in your values....

     time = (100 mi) / (22 mi/h)

             = 4.54545454.... hours

As for sig figs in this question you would need to round this answer to 1 sig fig because 100 only has 1 sig fig. (you round to the lowest # of sig figs in the question)

     = 5 hours

It took the cyclist 5 hours to complete their race

Hope this helps! Best of luck <3

4 0
3 years ago
A jet aircraft is traveling at 260 m/s in horizontal flight. The engine takes in air at a rate of 53.3 kg/s and burns fuel at a
IrinaVladis [17]

Answer:

The thrust of the jet engine is 4188.81 N.

Explanation:

Given that,

Speed = 260 m/s

Rate in air= 53.3 kg/s

Rate of fuel = 3.63 kg/s

Relative speed = 317 m/s

We need to calculate the rate of mass change in the rocket

Using formula of rate of mass

\dfrac{dM}{dt}=\dfrac{dM_{a}}{dt}+\dfrac{dM_{f}}{dt}

Put the value into the formula

\dfrac{dM}{dt}=53.3+3.63

\dfrac{dM}{dt}=56.93\ kg/s

We need to calculate the thrust of the jet engine

Using formula of thrust

T=\dfrac{dM}{dt}u-\dfrac{dM_{a}}{dt}v

Put the value into the formula

T=56.93\times317-53.3\times260

T=4188.81\ N

Hence, The thrust of the jet engine is 4188.81 N.

7 0
4 years ago
A boat having a length 3m and breadth 2m is floating on a
brilliants [131]

Answer:

60 kg

Explanation:

The man's weight is equal to the weight of the water he displaces.

mg = ρVg

m = ρV

m = (1000 kg/m³) (3 m × 2 m × 0.01 m)

m = 60 kg

The man's mass is 60 kg.

3 0
3 years ago
I want help with Question num 4 (a,b,c). Thank u
frosja888 [35]

Answer

a) Draw an upward force from the bottom to indicate upthrust

b) Upthrust is an upward force acting on an object floating on a liquid... hence there is an upward force acting on the iceberg which causes it to float.

c) Unfortunately I don't know the answer.

8 0
3 years ago
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