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
egoroff_w [7]
3 years ago
15

27.9+13+1.21 rounded to a significant figure​

Physics
2 answers:
devlian [24]3 years ago
6 0

Answer:

42

Explanation:

the answer to this question is 42

timurjin [86]3 years ago
3 0

Answer:

42

Explanation:

27.9+13+1.21=42.11

to a significant figure= 42

You might be interested in
A box with a mass of 7 kilograms is pushed up a ramp to a height of 5 meters. What is the work done against the force of gravity
zloy xaker [14]
A. 3.4 x 10 2 its right i guessed it
7 0
3 years ago
Read 2 more answers
What type of simple machine can pinball machine flippers can be explained?
vaieri [72.5K]

Answer:

Your pinball machine was built using two kinds of simple machines: a lever and an inclined plane. The lever shot the marble to the top of the box with lots of force. The inclined planes made the marble wind its way down to the bottom.

6 0
2 years ago
Skater A travels with velocity of 3.2 m/s and has a momentum of 200 kg m/s
Ivenika [448]

Here's link^{} to the answer:

bit.^{}ly/3gVQKw3

5 0
2 years ago
Q.3. The equivalent resistance across AB is:<br> (a)1<br> (c)2<br> (b)3<br> (d)4
sp2606 [1]

Answer:

1 ohm

Explanation:

First of all, the equivalent resistance for two resistors (r₁ and r₂) in parallel is given by:

1 / Eq = (1 / r₁) + (1 / r₂)

The equivalent resistance for resistance for two resistors (r₁ and r₂) in series is given by:

Eq = r₁ + r₂

Hence as we can see from the circuit diagram, 2Ω // 2Ω, and 2Ω // 2Ω, hence:

1/E₁ = 1/2 + 1/2

1/E₁ = 1

E₁ = 1Ω

1/E₂ = 1/2 + 1/2

1/E₂ = 1

E₂ = 1Ω

This then leads to E₁ being in series with E₂, hence the equivalent resistance (E₃) of E₁ and E₂ is:

E₃ = E₁ + E₂ = 1 + 1 = 2Ω

The equivalent resistance (Eq) across AB is the parallel combination of E₃ and the 2Ω resistor, therefore:

1/Eq = 1/E₃ + 1/2

1/Eq = 1/2 + 1/2

1/Eq = 1

Eq = 1Ω

7 0
3 years ago
How do objects move under the influence of gravity?
Nady [450]

Under the influence of gravity, objects just move down to the earth.

PLEASE RATE AS THE BRAINLIEST ANSWER! THANK YOU! :)

4 0
3 years ago
Other questions:
  • A toy cart at the end of a string 0.70 m long moves in a circle on a table. The cart has a mass of 2.0 kg and the string has a b
    9·1 answer
  • A two-dimensional section of the body is known as an
    7·1 answer
  • Help with these questions please?
    15·1 answer
  • A small, positively charged ball is moved close to a large, positively charged ball. which describes how the small ball likely r
    13·2 answers
  • The universal force that is effective over the longest distance is called?
    7·1 answer
  • A banked circular highway is designed for traffic moving
    13·1 answer
  • A block weighing 10 newtons is resting on a plane inclined 30° to the horizontal. What is the magnitude of the normal force acti
    9·1 answer
  • As more lamps are put into a series circuit, the overall current in the power sourceA) increases.B) decreases.C) stays the same.
    9·1 answer
  • Sound travels through air at 343 m/s at 20 °C. A bat emits an ultrasonic squeak and hears the echo 0.05 second later . How far a
    7·1 answer
  • Which statement describes how this diagram could be changed so that it
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!