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
Y_Kistochka [10]
4 years ago
11

A ufo was detected on the radar flying 7400 miles in 3 min, what is the estimated speed per hour?

Physics
1 answer:
Ghella [55]4 years ago
8 0
S=7400mi
t=3 min= 0.05h
v=7400mi/0.05h
v=148000mph
You might be interested in
The potential energy of an apple is 19.6 J, and it is 8 m above the ground. The mass of the apple is _____ kg
Crazy boy [7]
We know, U = mgh
Substitute the known values, 
19.6 = m * 9.8 * 8
m = 19.6 / 78.4
m = 1/4

In short, Your Answer would be 1/4 Kg

Hope this helps!
8 0
3 years ago
A ball rolls of a cliff and when it lands has a vertical velocity 35 ms ^-1. how high was the cliff?
Licemer1 [7]
Using V²=u² +2gH
let's assume the ball falls from rest, then it's initial velocity = 0ms-¹ (U=0)
then from the above info V= 35ms-¹
g= 10ms-² (value of acceleration due to gravity to the nearest tens)

so input your values above into the given formula to find height
35² = 0² +2×10×H
1225 = 20H
H = 1225÷20 = 61.25m
6 0
3 years ago
Which sound wave would travel at the fastest speed?.
n200080 [17]

Answer:

Solids

Explanation:

Sound travels fastest through solids. This is because molecules in a solid medium are much closer together than those in a liquid or gas, allowing sound waves to travel more quickly through it. In fact, sound waves travel over 17 times faster through steel than through air.

4 0
3 years ago
If the San Andreas Fault moves 200 cm (2 meters) per big earthquake, and plate movement is xx cm/yr (see question above), how ma
weqwewe [10]

Answer:

Option C

80 years

Explanation:

<em>From Scientific records, the rate of movement of the plate is 0.025 meters</em>

Since the fault moves at the rate of 2 meters per year, to obtain the number of years it will takes to produce an earth quake, we will have to divide the rate of movement of the fault by the rate of movement of the plate.

Number of years for earthquake = \frac{2}{0.025}= 80 years.

Hence, it will take 80 years to produce one big earthquake.

5 0
4 years ago
How is momentum conserved is a Newton's cradle when one steel ball hits the other
Vikentia [17]

Answer:

Newton's Cradle experiment perfectly demonstrates the law of conservation of momentum which states that in a closed system, momentum before the collision is equal to momentum after the collision of the system.

As the first ball swings in the air, it gains momentum. When it strikes the second ball, it loses momentum and second ball gains equal amount of momentum. The second ball transfers the momentum to third, then fourth and till the last. The last ball when gains the same momentum swings up in the air. This continues. This experiment is done in drag free condition. This means there is no loss of momentum or opposing forces present.


4 0
3 years ago
Other questions:
  • Which of these is a part of the biosphere? a. wind b. lakes c. bacteria d. glaciers
    7·2 answers
  • What statement best describes the kind of change that could have taken place
    8·1 answer
  • If you walk at 0.7 m/s, how long would it take to walk a mile which is 1609 m
    12·2 answers
  • The SI unit of force is the A. meter. B. joule. C. newton. D. kilogram.
    5·2 answers
  • What do hurricanes use to gain strength?
    9·2 answers
  • I do not understand Auroras are lights that appear at Earth’s northern and southern poles. What is the main cause of an aurora?
    6·1 answer
  • Which of the following describes an action-reaction pair?
    7·2 answers
  • Who is one woman who has contributed greatly to science? How?
    13·1 answer
  • For 1983 through 1989, the per capita con-
    12·1 answer
  • What is the speed of light ?​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!