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
professor190 [17]
3 years ago
10

If a car goes down Lake at 30 miles per hour how far will it go in 0.25 hours?

Physics
1 answer:
kati45 [8]3 years ago
7 0

Answer:

7.5 miles

Explanation:

0.25 hours=15minutes.

So you do

30 miles=60minutes

x =15minutes

cross multiply

Ans-7.5

You might be interested in
explain how the composition of a star that will form a billon years in the future will differ the composition of our sun.
Grace [21]

Answer:

Explanation:

Basically the star slowly burns its hydrogen into Helium. Depending on the mass, the star will have a turbulent core where the Helium will be fully mixed or a radiative core where the helium will settle at the centre (remember it's heavier than Hydrogen). The second case is what happens in the Sun.

3 0
2 years ago
Kilogram and second are called fundamental units why​
Digiron [165]

Answer:

It is because they are physical quantities

Explanation:

I think so..

6 0
3 years ago
Read 2 more answers
The polar coordinates of the collar A are given as functions of time in seconds by r = 2+ 0.7 t2 ft and ????= 3.5t rad. What are
r-ruslan [8.4K]

Answer with explanation:

Part a)

v_{radial}=\frac{dr}{dt}=\frac{d(2+0.7t^{2})}{dt}\\\\v_{radial}=1.4t\\\\\therefore v_{radial}|_{t=4}=1.4\times 4=5.6ft/s\\\\v_{angular}=r|_{t=4}\times \frac{d\theta }{dt}=13.2\frac{3.5t}{dt}=46.2fts^{-1}\\\\\therefore v=\sqrt{v_{radial}^{2}+v_{angular}^{2}}\\\\v=46.53ft/s

Part b)

a_{radial}=\frac{d^{2}r}{dt^{2}}=\frac{d^{2}(2+0.7t^{2})}{dt^{2}}\\\\a_{radial}=1.4ft/s^{2}\\\\a_{angular}=r\times \frac{d^{2}\theta }{dt^{2}}\\\\a_{angular}=r\times \frac{d^{2}(3.5t) }{dt^{2}}\\\\\therefore a_{angular}=0\\\\\therefore Accleration=1.4ft/s^{2}

8 0
3 years ago
A car enters a freeway with initial velocity of 15.0 m/s and with con stant rate of acceleration, reaches a velocity of 22.5 m/s
LiRa [457]

Answer:

a) The acceleration is 2.14 m/s^{2}

b) The distance traveled by the car is 65.61 m

c) The average velocity is 18.75 m/s

Explanation:

Using the equations that describe an uniformly accelerated motion:

a) a=\frac{v_f - v_o}{t} =\frac{22.5m/s - 15.0 m/s}{3.50s}

b) d= d_0 + v_0 t + \frac{1}{2} a t^{2} = 0 +15.0 x 3.5 + \frac{2.14x3.50^{2} }{2} = 65.61 m

c) v_m =\frac{d}{t}=\frac{65.61}{3.5}  =18.75 m/s

8 0
4 years ago
What is the iodide ion concentration in a solution if the addition of an excess of 0.100 m pb(no3)2 to 42.9 ml of the solution p
Katen [24]
Moles Pbl2 =  0.8628 g  :  461.01 g/mol   = 0.001871

moles I = 2 x  0.001871 = 0.003742

[I-] = 0.003742/ 0.0429

= 0.0872 M
3 0
3 years ago
Other questions:
  • 5. A construction worker on a high-rise building is on a platform suspended between two cables as illustrated below. The constru
    11·1 answer
  • What is bullying. Why do people bully others
    10·2 answers
  • A block of metal is 3 cm on each side. It has a mass of 283.5 grams. What is the density of the metal.
    15·1 answer
  • Loghan and Kyle wanted to see if the type of ice cream in the freezer affects how hard or soft it is. At three different times,
    14·2 answers
  • How are distance and displacement the same?
    5·2 answers
  • If heat is added to a substance, which of the following is the correct order of phase change?
    6·1 answer
  • Assume this 1.20-mm-radius copper wire is electrically neutral in the Earth reference frame, in which it is at rest and carrying
    13·1 answer
  • A negatively charged particle is moving to the right, directly above a wire have a current flowing to the right. In which direct
    14·1 answer
  • What causes the angle of the sun’s rays to change during the year on Earth?
    15·1 answer
  • Evaluate tan45/tan45
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!