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
ASHA 777 [7]
4 years ago
9

In a free fall experimate you determine the value of acceleration due to gravity (g) to be 9.50 m/s2 . The accepted value is 9.8

1 m/s2 . What your percent error?
Physics
1 answer:
lisov135 [29]4 years ago
3 0

If the value 9.81 is correct, then your error is (-0.31).

As a fraction of the correct value, your error is  (-0.31)/(9.81) .

That's -0.0316,  or  -3.16 percent .

By the way ... LAST time somebody posted this same question on Brainly, he was nice enough to also let us see the list of choices.

You might be interested in
Ganda wow innova jhbjguyhyujj​
vivado [14]

Answer:

what is your question?..... .

8 0
3 years ago
Read 2 more answers
The electric field of a sinusoidal electromagnetic wave obeys the equation E = (375V /m) cos[(1.99× 107rad/m)x + (5.97 × 1015rad
kenny6666 [7]

Answer:

a)  v = 2,9992 10⁸ m / s , b)  Eo = 375 V / m ,  B = 1.25 10⁻⁶ T,

c)     λ = 3,157 10⁻⁷ m,   f = 9.50 10¹⁴ Hz ,  T = 1.05 10⁻¹⁵ s , UV

Explanation:

In this problem they give us the equation of the traveling wave

        E = 375 cos [1.99 10⁷ x + 5.97 10¹⁵ t]

a) what the wave velocity

all waves must meet

        v = λ f

In this case, because of an electromagnetic wave, the speed must be the speed of light.

        k = 2π / λ

        λ = 2π / k

        λ = 2π / 1.99 10⁷

        λ = 3,157 10⁻⁷ m

        w = 2π f

        f = w / 2 π

        f = 5.97 10¹⁵ / 2π

        f = 9.50 10¹⁴ Hz

the wave speed is

        v = 3,157 10⁻⁷   9.50 10¹⁴

        v = 2,9992 10⁸ m / s

b) The electric field is

           Eo = 375 V / m

to find the magnetic field we use

           E / B = c

           B = E / c

            B = 375 / 2,9992 10⁸

            B = 1.25 10⁻⁶ T

c) The period is

           T = 1 / f

            T = 1 / 9.50 10¹⁴

            T = 1.05 10⁻¹⁵ s

the wavelength value is

          λ = 3,157 10-7 m (109 nm / 1m) = 315.7 nm

this wavelength corresponds to the ultraviolet

5 0
4 years ago
(Thanks in advance)
Dmitrij [34]

I would say it B) in the same direction feel free to ask me more question

5 0
3 years ago
Characteristics we use to tell the difference between kinds of matter are called___ properties
d1i1m1o1n [39]

Answer:

I believe it's called qualitative

Explanation:

8 0
3 years ago
Two blocks are on a horizontal frictionless surface. Block a is moving with an initial velocity
AfilCa [17]

The final velocity of the block A will be 2.5 m/sec. The principal of the momentum conversation is used in the given problem.

<h3>What is the law of conservation of momentum?</h3>

According to the law of conservation of momentum, the momentum of the body before the collision is always equal to the momentum of the body after the collision.

In a given concern, mass m₁ is M, mass m₂ is 3M. Initial speed for the mass m₁ and  m₂ will be u₁=5 and u₂=0 m/s respectively,

According to the law of conservation of momentum

Momentum before collision =Momentum after collision

m₁u₁+m₂u₂=(m₁+m₂)v

M×5+3M×0=[M+3M]v

The final velocity is found as;

V=51.25 m/s

The velocity of block A is found as;

\rm V_f=\frac{(m_1-m_2)u_1}{m_1+m_2} +\frac{2m_2u_2}{m_1+m_2} \\\\  V_f=\frac{(M-3M)5+2\times3M\times0}{m_1+m_2} \\\\ V_f=2.5 m/s

Hence, the final velocity of the block A will be 2.5 m/sec.

To learn more about the law of conservation of momentum, refer;

brainly.com/question/1113396

#SPJ4

5 0
3 years ago
Other questions:
  • The area of the top side of a piece of sheet metal is given below. The sheet metal is submerged horizontally in 8 feet of water.
    15·1 answer
  • True or False? Mechanical waves do NOT need a medium to travel through.
    10·2 answers
  • When energy is changed from one form to another, ____.
    8·2 answers
  • A 113 ‑turn circular coil of radius 2.71 cm and negligible resistance is immersed in a uniform magnetic field that is perpendicu
    8·1 answer
  • Which object is accelerating downward at the slowest rate? a textbook falling onto the surface of the moon a flower pot that has
    15·1 answer
  • Joe and Bill throw identical balls vertically upward. Joe throws his ball with an initial speed twice as high as Bill. If there
    14·1 answer
  • The term fetus completes which of the following lists to show the correct order of development?
    12·1 answer
  • Please help me I swear will mark you brainiest
    14·2 answers
  • 2 Fig. 1 shows the position of an object as a function of time. What is the average speed of the object between time t = 0.0 s a
    9·1 answer
  • jordan has a mass of 65kg and carlos has a mass of 78.0kg. jordan is running at 5.75m/s when he is tackled by carlos who is runn
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!