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
Nadya [2.5K]
3 years ago
5

Why might a scientist repeat an experiment if she did not make a mistake in the first one?

Physics
1 answer:
iren2701 [21]3 years ago
4 0

Answer:

B

Explanation:

You might be interested in
10. How much work is done by gravity if it pulls a 100 N object down 2 m?
NeTakaya

Answer:

200 J

Explanation:

W = f * d

W = 100N * 2m

W = 200 J

5 0
3 years ago
Comic strip hero superman meets an asteroid in outer space and hurls it at 100m/s. he has a mass of "m". The astroid has a mass
Katyanochek1 [597]

Answer:

v = -10⁵ m/s

Explanation:

given,

speed of asteroid,v' = 100 m/s

mass of superman = m

mass of asteroid,M = 1000 m

recoil velocity of superman,v= ?

using conservation of momentum.

m u + M u' = m v + M v'

initial velocity of asteroid and superman is equal to  zero

 0 + 0 = m v + 1000 m x 100

m v = -100000 m

    v = -10⁵ m/s

superman's velocity after throwing the asteroid is equal to v = -10⁵ m/s

8 0
4 years ago
g A boat is anchored 2000 ft from shore anddirects its searchlight towards an automobile travelingdown the straight road. At the
Darya [45]

Answer:

Explanation:

The distance of searchlight will act as radius R and velocity of car may be supposed to be tangential velocity v  . We are required to calculate  angular velocity ω .

v = 80 ft /s

R = 3000 ft

ω = v / R

= 80  / 3000 = .027 rad / s

For angular acceleration the formula is

angular acceleration α = a / R

a is linear acceleration = 15 ft / s²

α = 15 / 3000 = .005 rad / s².

3 0
3 years ago
15 points and will mark as a brainlest PLEASE
vekshin1
It is E pls mark me braliest
5 0
3 years ago
Read 2 more answers
find an expression for a moment of inertia of a thin rod rotating about an axis passing through its center perpendicular to it's
jenyasd209 [6]

the Axis Perpendicular to the Length and Passing through the Center. Take a uniform thin rod AB whose mass is M and length is l. YY’ axis passes through the center of the rod and perpendicular to the length of the rod. We have to calculate the moment of inertia about this axis. YY’.

Suppose, small piece dx is at a distance x from the YY' axis. Hence, mass of length dx is =(

l

M

)dx The moment of inertia of small piece about the YY' axis

dl=[(

l

M

)dx]x

2

Therefore, the moment of inertia of the complete rod about the YY' axis.

b) Moment of Inertia about the axis perpendicular to the the length and passing through the Corner If I

CD

is the moment of inertia about the axis CD perpendicular to the length of a thin rod and passing through the point A then, by theorem of parallel axis;

l

CD

=l

YY

′

+Md

2

=

12

Ml

2

+M(

2

l

)

2

l

CD

=

3

Ml

2

.........(2)

5 0
3 years ago
Other questions:
  • HELPPPP MEEE!!! 15 POINTS
    9·1 answer
  • What is the low end of the range of surface temperature of white stars
    7·1 answer
  • Andy is waiting at the signal. As soon as the light turns green, he accelerates his car at a uniform rate of 8.00 meters/second2
    8·1 answer
  • A student conducted an experiment that used two rose plants to determine if a liquid formula for fertilizer was better than a dr
    9·1 answer
  • Why were epicycles necessary in ptolemy’s model of the universe?
    9·2 answers
  • How is the power of a magnet determined
    7·1 answer
  • 1). An Owl and bat share the same kingdom and phylum; an owl and a cardinal share the same kingdom, phylum, and class. The owl a
    8·2 answers
  • What is the mass of a bicycle moving at 8ms with ke of 384j ?
    10·1 answer
  • Green light has higher refractive index than orange light for the same material medium.explain​
    6·1 answer
  • A 2kg body is moving a long a horizontal circular path of radius 2m with constant speed of 6m/s . what is the magnitude of the f
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!