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
oksano4ka [1.4K]
3 years ago
13

While doing a lab, a student found the density of a piece of pure aluminum to be 2.85 g/cm3. The accepted value for the density

of aluminum is 2.70 g/cm3. What was the student's percent error?
Physics
1 answer:
bezimeni [28]3 years ago
3 0
The equation for percent error is

% Error = 100*|Experimental-Theoretical|/Theoretical

Our experimental is 2.85g/cm^3 and the accepted is 2.7g/cm^3

Thus our % Error = 5.555%
You might be interested in
A volcano erupts and launches a chunk of hot magma horizontally with a speed of 252 m/s. The magma travels a horizontal distance
ArbitrLikvidat [17]

Answer:

The value is v_y  =  -48.61 \ m/s

Explanation:

From the question we are told that

   The horizontal speed is  u_x  = 252 \  m/s

    The horizontal distance is  d = 1250 \ m

Generally the time taken by the hot magma in air before landing is mathematically represented as

       t = \frac{d}{u_x}

=>    t = \frac{ 1250 }{252}

=>    t = 4.96 \  s

Generally the initial vertical velocity of the magma when it was lunched is  

    u_y = 0 \ m/ s

Then the final velocity of the magma when it hits the ground is mathematically represented s

       - v_y  =  u_y + gt

Here the negative sign mean that the direction of the velocity is towards the negative y -axis

So  

        - v_y  =  48.61 \ m/s

=>     v_y  =  -48.61 \ m/s

7 0
2 years ago
Determine the amount of work done on an ideal gas as it is heated in an enclosed thermally insulated cylinder topped with a free
sp2606 [1]

Answer:

W = 3/2 n (T₁- T₂)

Explanation:

Let's use the first law of thermodynamics

           ΔE = Q + W

in this case the cylinder is insulated, so there is no heat transfer

           ΔE = W

internal energy can be related to the change in temperature

            ΔE = 3/2 n K ΔT

we substitute

           3/2 n (T₂-T₁) = W

as the work is on the gas it is negative

            W = 3/2 n (T₁- T₂)

3 0
3 years ago
When riding your skateboard you crash into a curb, the skateboard stops, you continue moving forward. Which law of motion is bei
Olenka [21]
You continue moving forward, and you HOPE that some of the other
people in your Physics class are seeing this, because it's a great
demonstration of Newton's First Law of Motion.
7 0
3 years ago
How do you find final speed of two objects that sticked together after colliding on an frictionless inclined plane?
Nady [450]

Explanation:

sorry please can jspme one pleasejhe

5 0
2 years ago
HELPWILLGIVEBRAINLIEST!!!
DENIUS [597]

Answer:

It’s D

Explanation:

5 0
2 years ago
Read 2 more answers
Other questions:
  • Two circular rods, one steel and the other copper, are both 0.780 m long and 1.50 cm in diameter. Each is subjected to a force w
    13·1 answer
  • How can you find the nuetrons in youre element ??
    15·1 answer
  • Find Vxl and Vyl of a pumpkin launched at a velocity of 55 m/s at an angle of 20 degrees
    12·1 answer
  • What is the universe made of? Astronomers face an embarrassing conundrum: they don't know what 95% of the universe is made of​
    11·1 answer
  • What information is needed to determine the orientation of an orbital?
    6·1 answer
  • A ball is thrown with a speed of 10 m/s at an angle of 65. which of the following statement describes the motion of the ball at
    11·2 answers
  • What happens when two charged objects are moved closer together ​
    14·1 answer
  • Scott is making a chart to show the difference between chemical reactions and nuclear reactions. Which part of his chart is inco
    15·1 answer
  • Please help me and I’ll mark as brainliest i promise
    12·1 answer
  • 20. A 0.450-kg baseball comes off a bat and goes straight up. At a height of 10.0 m, the
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!