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
Gre4nikov [31]
3 years ago
14

During a circus act, an elderly performer thrills the crowd by catching a cannon ball shot at him. The cannon ball has a mass of

74.0 kg and its horizontal component of velocity is 7.00 m/s just before the 65.0 kg performer catches it. If the performer is initially motionless on nearly frictionless roller skates, what is his speed immediately after catching the cannon ball
Physics
1 answer:
Ipatiy [6.2K]3 years ago
4 0

Answer:

m v1 = (m + M) v2

v2 = m v1 / (m + M)

v2 = 7 * 74 / (74 + 65)

3.73 m/s

74 kg is too heavy for the cannonball (over 150 lbs)

You might be interested in
A grating has 470 lines/mm. how many orders of the visible wavelength 538 nm can it produce in addition to the m = 0 order?
Natali [406]

Three complete orders on each side of the m=0 order can be produced in addition to the m=0 order.

The ruling separation is d=1/(470mm-1)

= 2.1 \times 10 {}^{ - 3}mm

Diffraction lines occurs at an angle θ such that dsin=mλ,when λ is the wavelength and m is an integer.

Notice that for a given order,the line associated with a long wavelength is produced at a greater angle than the line associated with shorter wavelength.

we take λ to be the longest wavelength in the visible spectrum (538nm) and find the greatest integer value of m such that θ is less than 90°.

That is,find the greater integer value of m for which mλ<d.

since,d/λ

= 538 \times 10 {}^{ - 9} m/2.1 \times 10 {}^{ - 6}

There are three complete orders on each side of the m=0 order.

The second and third orders overlap.

learn more about diffraction from here: brainly.com/question/28168352

#SPJ4

4 0
2 years ago
Briefly describe the formation of the planets from the solar nebula
saul85 [17]
<span>The formation of the Solar System began 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. Most of the collapsing mass collected in the center, forming the Sun, while the rest flattened into a proto-planetary disk out of which the planets, moons, asteroids, and other small Solar System bodies formed.


Hope it helped
</span>
6 0
3 years ago
planet a takes one year to go around the sun at a distance of one au. .planet b is three a u. from the sun. how many years does
shtirl [24]

Answer:

3 years

Explanation:

Find the circumference of each orbit in AU.

2xπx1=6.283185307

2xπx3=18.84955592

Divide them.

18.84955592/6.283185307=3

3 years

4 0
3 years ago
In a thunder and lightning storm there is a rule of thumb that many people follow. After seeing the lightning, count seconds to
lubasha [3.4K]

Answer:

2.837% less than actual value.

Explanation:

Based on given information let's calculate our value.

S = Vxt = 331m/s x 5s = 1655m, that is the total distance that sound would travel in 5 seconds.

1mile = 1609.34meters.

percentage error is.

\frac{actual-calculated}{actual} *100 = \frac{1609.34-1655}{1609.34} *100 = -2.83%

negative indicates less than actual value.

3 0
4 years ago
30.42
CaHeK987 [17]

Answer: Try C

Explanation:

It's the only one that makes since.

7 0
3 years ago
Other questions:
  • A system loses 570 j of potential energy. in the process, it does 650 j of work on the environment and the thermal energy increa
    9·1 answer
  • What does "Time (s)” represent in the graph? the y-axis the dependent variable an inverse relationship the independent variable
    9·2 answers
  • A frisbee is flying through the air. Which forces are acting on it (choose 3)​
    15·1 answer
  • What is the standard unit used to measure mass?<br><br> cubic meters<br> gram<br> liter<br> meter
    7·2 answers
  • Which statement accurately describes the chemical symbol of an element?
    15·2 answers
  • The Democratic Party today is generally considered more liberal than the Republican Party because its members and elected offici
    10·1 answer
  • An acceleration of 2m/s^2 is produced on a body by applying an effort of 50N. calculate mass of the body​
    10·2 answers
  • Hi can you help me with this please?
    6·1 answer
  • Are the two bulbs acting as current dividers or potential dividers? Explain your answer​
    5·1 answer
  • A circular steel wire 3.00 mm long must stretch no more than 0.25 cmcm when a tensile force of 780 NN is applied to each end of
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!