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
Monica [59]
3 years ago
7

What condition is necessary for an object to make a good reference point?

Physics
1 answer:
777dan777 [17]3 years ago
8 0
The object is fixed relative to the motion you are trying to describe.
You might be interested in
Which of the following is an example of aerobic activity?
mafiozo [28]
An example of an aerobic activity would be A, Cross-country skiing
4 0
3 years ago
a closed tank is partially filled with glycerin. if the air pressure in the tank is 6 lb/in.2 and the depth of glycerin is 10 ft
vlabodo [156]

Answer:

<u><em>note:</em></u>

<u><em>solution is attached due to error in mathematical equation. please find the attachment</em></u>

4 0
3 years ago
.2, A car starting from rest has an acceleration of
riadik2000 [5.3K]

Answer: 2.5 m/s and 6.25 m

Explanation:

u = 0

a = 0.5 m/s²

t = 5 s

v = u + at

=  0 + 0.5 × 5

= <u>2.5 m/s</u>

s = ut + 1/2 at²

= 1/2 × 2.5 × 5

=<u> 6.25 m</u>

7 0
3 years ago
I started to solve this problem but I’m not sure on what to do next.
snow_tiger [21]

ANSWER:

3408.81 kg

STEP-BY-STEP EXPLANATION:

Given:

v = 111 m/s

Ek = 21000000 J

We have that the formula for kinetic energy is as follows:

E_k=\frac{1}{2}\cdot m\cdot v^2

We substitute the values given in the exercise and solve for m (mass)

\begin{gathered} 21000000=\frac{1}{2}\cdot m\cdot111^2 \\ m=\frac{21000000\cdot2}{111^2} \\ m=3408.81\text{ kg} \end{gathered}

The mass of the helicopter is 3408.81 kilograms.

7 0
1 year ago
The engine of a 1520-kg automobile has a power rating of 75 kW. Determine the time required to accelerate this car from rest to
LUCKY_DIMON [66]

Answer:

t=15.68 s

Explanation:

Given that

m = 1520 kg

P =75 KW

We know that

Power  ,P = F .v

F=force

v=velocity

v= 100 km/h

v=\dfrac{1000}{3600}\times 100\ m/s

v=27.77 m/s

75 x 1000  = F x 27.77

F= \dfrac{75000}{27.77}\ N

F= 2700.75 N

F= m a

m=mass

a=acceleration

2700.75 = 1520 x a

 a=1.77 m/s²

time t given as

v= u + a t

27.77 = 0 + 1.77 x t

t=15.68 s

3 0
3 years ago
Other questions:
  • NEED HELP ASAP Carlos is analyzing the results of a recent scientific study about gravity. Scientists recorded that the experime
    13·1 answer
  • Using r.i.v.p. How do I calculate circuits wit 12 volts
    14·1 answer
  • A car of mass 1230 kg is on an icy driveway inclined at an angle of 39°. The acceleration of gravity is 9.8 m/s². θ If the incli
    5·1 answer
  • If my science fair project is about if girls can see through illusions better than boys, what would my background research be ab
    9·1 answer
  • A circular flat coil that has N turns, encloses an area A, and carries a current i, has its central axis parallel to a uniform m
    11·1 answer
  • Cuantos CM son:<br><br>8 newtons
    7·1 answer
  • What is the relationship between mass and acceleration on an object when the force is held constant?
    9·1 answer
  • Which is a disadvantage of storing data digitally?
    12·2 answers
  • Elizabeth .........................................................................
    10·2 answers
  • The process of losing heat that does not
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!