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
OleMash [197]
3 years ago
5

I need help with number 2 pls it’s a quiz grade

Physics
1 answer:
Eduardwww [97]3 years ago
8 0
2 is correct hope you get it right
You might be interested in
If 56.5 m3 of a gas are collected at a pressure of 455 mm Hg, what volume will the gas occupy if the pressure is changed to 632
ExtremeBDS [4]

Assuming ideal conditions, Boyle's law says that

<em>P₁ V₁ </em>= <em>P₂</em> <em>V₂</em>

where <em>P₁ </em>and <em>V₁</em> are the initial pressure and temperature, respectively, and <em>P₂</em> and <em>V₂</em> are the final pressure and temperature.

So you have

(455 mm Hg) (56.5 m³) = (632 mm Hg) <em>V₂</em>

==>   <em>V₂</em> = (455 mm Hg) (56.5 m³) / (632 mm Hg) ≈ 40.7 m³

4 0
3 years ago
The Golden Gate Bridge in San Francisco has a main span of length 1.28 km, one of the longest in the world. Imagine that a steel
Valentin [98]

Answer:

361.46 N

Explanation:

\alpha = Coefficient of thermal expansion = 11\times 10^{-6}\ /^{\circ}C

Y = Young's modulus for steel = 20\times 10^{10}\ Pa

A = Area = 3.1\times 10^{-6}\ m^2

L_0 = Original length = 1.28 km

\Delta T = Change in temperature = 45-(-10)

Length contraction is given by

\Delta L=\alpha L_0\Delta T

Also,

\Delta L=\dfrac{L_0T}{YA}

\alpha L_0\Delta T=\dfrac{L_0T}{YA}\\\Rightarrow T=\alpha \Delta TYA\\\Rightarrow T=11\times 10^{-6}\times (43-(-10))\times 20\times 10^{10} \times 3.1\times 10^{-6}\\\Rightarrow T=361.46\ N

The tension in the wire is 361.46 N

4 0
3 years ago
A waiter carries a plate on top of his arm. The waiter's arm applies an upward force to the plate and holds it up. This force is
Phantasy [73]
I believe it is away from his arm since the question states his arm is applying an upwards force
6 0
3 years ago
Read 2 more answers
A man, facing a high wall, notices that an echo is heard 4.0 seconds after he makes a sharp sound. After walking 200m directly t
cestrela7 [59]

Answer:2.4

Explanation:basically 2.4 = 2.500 kg and then we add 3.4 seconds in all of them 4.0 + 3.4 = 2.5 ok

4 0
3 years ago
The San Andreas Fault in California exists along a _____ plate boundary.
allochka39001 [22]
The answer should be transform
5 0
4 years ago
Other questions:
  • Explain, briefly, what the electrical field inside a microwave oven does to heat food.
    11·1 answer
  • Look at the vector below. It is at a 58 degree angle and has a magnitude of 35.
    15·1 answer
  • You are driving on the interstate and see a sign that says the speed limit is 50 miles per hour.
    9·2 answers
  • If the temperature of the developing solution is slightly above normal, radiographic images of the required density may be produ
    6·1 answer
  • Three fire hoses are connected to a fire hydrant. Each hose has a radius of 0.014 m. Water enters the hydrant through an undergr
    6·1 answer
  • The energy goes from _____ to the _____ above it.
    12·1 answer
  • Electromagnets are used in to produce a rotating magnetic field that turns a rotor.
    8·1 answer
  • A 3.5 kg object gains 76 J of potential energy as it is lifted vertically. Find the new height of the object?
    5·2 answers
  • As charges move in a closed loop, they
    6·1 answer
  • A 1000-turn coil of wire 2.0 cm in diameter is in a magnetic field that drops from 0.10 T to 0 T in 10 ms. The axis of the coil
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!