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
Nana76 [90]
4 years ago
15

a 10.0 kg block on a smooth horizontal surface is acted upon by two forces: a horizontal force of 30 N acting to the right and a

horizontal force of 60N to the left. What acceleration will the block experience?
Physics
1 answer:
Eddi Din [679]4 years ago
7 0

Answer:

a=-3\ m/s^2

Explanation:

<u>Second Newton's Law</u>

It allows to compute the acceleration of an object of mass m subject to a net force Fn. The relation is given by

F_n=m.a

The net force is the sum of all vector forces applied to the object. The block has two horizontal forces applied (in absence of friction): The 30 N force acting to the right and the 60 N force to the left. The positive horizontal direction is assumed to the right, so the net force is

F_n=30\ N-60\ N=-30\ N

Thus, the acceleration can be computed by

\displaystyle a=\frac{F_n}{m}=\frac{-30}{10}=-3\ m/s^2

\boxed{\displaystyle a=-3\ m/s^2}

The negative sign indicates the block is accelerated to the left

You might be interested in
What grade of sprain is a completely torn ligament?
Alex Ar [27]
Grade 1: Stretching or slight tearing of the ligament with mild tenderness, swelling and stiffness. The ankle feels stable and it is usually possible to walk with minimal pain.

Grade 2: A more severe sprain, but incomplete tear with moderate pain, swelling and bruising. Although it feels somewhat stable, the damaged areas are tender to the touch and walking is painful.

Grade 3: This is a complete tear of the affected ligament(s) with severe swelling and bruising. The ankle is unstable and walking is likely not possible because the ankle gives out and there is intense pain.

source - https://www.rushcopley.com/health/physician-articles/varying-degrees-of-ankle-sprains/
6 0
3 years ago
You just calibrated a constant volume gas thermometer. The pressure of the gas inside the thermometer is 294.0 kPa when the ther
Travka [436]

Answer: 361° C

Explanation:

Given

Initial pressure of the gas, P1 = 294 kPa

Final pressure of the gas, P2 = 500 kPa

Initial temperature of the gas, T1 = 100° C = 100 + 273 K = 373 K

Final temperature of the gas, T2 = ?

Let us assume that the gas is an ideal gas, then we use the equation below to solve

T2/T1 = P2/P1

T2 = T1 * (P2/P1)

T2 = (100 + 273) * (500 / 294)

T2 = 373 * (500 / 294)

T2 = 373 * 1.7

T2 = 634 K

T2 = 634 K - 273 K = 361° C

5 0
3 years ago
Which of the following options is correct and why?
Dimas [21]

Answer:

Option (e) = The charge can be located anywhere since flux does not depend on the position of the charge as long as it is inside the sphere.

Explanation:

So, we are given the following set of infomation in the question given above;

=> "spherical Gaussian surface of radius R centered at the origin."

=> " A charge Q is placed inside the sphere."

So, the question is that if we are to maximize the magnitude of the flux of the electric field through the Gaussian surface, the charge should be located where?

The CORRECT option (e) that is " The charge can be located anywhere since flux does not depend on the position of the charge as long as it is inside the sphere." Is correct because of the reason given below;

REASON: because the charge is "covered" and the position is unknown, the flux will continue to be constant.

Also, the Equation that defines Gauss' law does not specify the position that the charge needs to be located, therefore it can be anywhere.

6 0
4 years ago
How is the pressure of a gas related to its concentration of particles?A) Pressure will expand a gas, enlarging its volume and r
Lesechka [4]

Answer:

C) Pressure will compress a gas, reducing its volume and giving it a greater density and concentration of particles.

Explanation:

At constant temperature, pressure and volume are inversely related.

P V = constant

\Rightarrow P \propto \frac{1}{V}

As the pressure increases, the gas compresses, the particles come closer reducing the volume of gas.

As we know, with decrease in volume, density increases.

Density = \frac{Mass}{Volume}

Density \propto \frac{1}{Volume}

Thus, the pressure of a gas is directly related to concentration of particles. Increase in pressure causes increase in concentration of the particles.

8 0
3 years ago
Noah stands 170 meters away from a steep canyon wall. He shouts and hears the echo of his
bezimeni [28]
340 ms


I got it right and I hope you do as well
6 0
3 years ago
Other questions:
  • Although the evidence is weak, there has been a concern in recent years over possible health effects from the magnetic fields ge
    8·1 answer
  • Grocery store managers contend that there is less total energy consumption in the summer if the store is kept at a low temperatu
    8·1 answer
  • A positive point charge q is placed at the center of an uncharged metal sphere insulated from the ground. The outside of the sph
    14·1 answer
  • A woman stands on a scale in a moving elevator. Her mass is 61.0 kg, and the combined mass of the elevator and scale is an addit
    9·1 answer
  • Give an example of a situation where you could use a cost/ benefit analysis. Be sure to explain at least one cost and one benefi
    6·1 answer
  • 2. An earthquake travels at 3.8 km/s and has a wavelength of 480 m. What is the frequency of the earthquake?
    10·1 answer
  • Linh builds a circuit from the diagram shown. Which bulb could Linh remove from the circuit to make all of the other bulbs stop
    9·2 answers
  • Suppose you throw a baseball downward from a roof so that it initially has 120 J of gravitational potential energy, and 10 J of
    5·2 answers
  • a hiker walks 11km due north from camp and then turns and walks 11 km due east. What is the approximate displacement of the hike
    14·1 answer
  • Question 2: In 2-4 sentences, explain what would happen to the cell if the nucleus didn’t work?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!