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
Mashutka [201]
3 years ago
8

Andrew pokes a marble, and the marble rolls down a ramp. The marble moves with speed. Which forces are acting on the marble in t

his
situation?
When Andrew pokes the marble, he gives it
The movement of the marble is slowed down by
force. As the marble rolls down the ramp,
from the ramp.
force pulls it down.
Physics
2 answers:
MissTica3 years ago
8 0

Answer: Velocity, Gravity, and Momentum

Alja [10]3 years ago
8 0

Answer:

The forces acting on the marble are; parallel and perpendicular forces.

When Andrew pokes the marble, he gave it an impulse. The movement of the marble is slowed down by friction and drag from the surrounding air molecules. As the marble rolls down the ramp, its weight pulls it down.

Explanation:

This is a simply experiment to determine effect of a force on an object. As it rolls down the ramp, parallel forces to the surface of the ramp and perpendicular foces to the surface are acting.

The initial impulse given produces motion and a change in momentum of the object.

The surface of the ramp applies an oppositional force to the direction of motion of the marble and same as the surrounding air molecules.

But the ramp continues to roll down due to the force of gravity and its mass.

You might be interested in
Near the earth's surface, the electric field in the open air has magnitude 150 N/c and is directed down towards the ground. If t
kati45 [8]

Hi there!

Using the equation for the electric field produced by an infinite sheet of charge:

E = \frac{\sigma}{2\epsilon_0}

E = Electric field strength (150 N/C)

σ = Surface charge density (? C/m²)

ε₀ = Permittivity of free space (8.8542× 10⁻¹² C²/Nm²)

We can rearrange the equation to solve for the surface charge density (charge per unit area)

E = \frac{\sigma}{2\epsilon_0}\\\\\sigma = 2E\epsilon_0\\\\\sigma = 2(150)(8.8542*10^{-12}) = \boxed{2.656 \times 10^{-9} \frac{C}{m^2}}

3 0
2 years ago
While walking between gates at an airport, you notice a child running along a moving walkway. Estimating that the child runs at
Mashcka [7]

Answer:

The speed of the moving walkway is 1.50 m/s

Explanation:

The position of the child can be calculated using the following equation:

x = x0 + v · t

Where :

x = position of the child at time t.

v = velocity of the child.

t = time.

When the child runs in the same direction as the walkway, the velocity of the child will be its  velocity relative to the walkway plus the velocity of the walkway. Then, if we place the origin of the frame of reference at the start of the walkway:

x = x0 + v · t

25 m = 0 m + (2.8 m/s + v) · t₁

Where v is the velocity of the walkway

On its way back, the velocity of the child relative to the walkway is in the opposite direction to the velocity of the walkway. Then:

x = x0 + v · t

0 m = 25 m + (-2.8 m/s + v) · t₂

We also know that t₁ + t₂ = 25 s

Then: t₁ = 25 - t₂

So, we can write the following system of equations:

25 m = (2.8 m/s + v) · (25 s - t₂)

-25 m = (-2.8 m/s + v) · t₂

Let´s take the second equation and solve it for t₂

-25 m / (-2.8 m/s + v) = t₂

Now, let´s replace t₂ in the first equation:

25 m = (2.8 m/s + v) · (25 s + 25 m / (-2.8 m/s + v))

Let´s sum the fraction: 25 s + 25 m / (-2.8 m/s + v)

25 m = (2.8 m/s + v) · (25 s ·(-2.8 m/s + v) + 25 m) / (-2.8 m/s + v)

multiply by (-2.8 m/s + v) both sides of the equation:

25 m(-2.8 m/s + v) = (2.8 m/s + v) · (-70 m + 25 s · v + 25 m)

Apply distributive property:

-70 m²/s +25 m·v = -196 m²/s +70 m·v +70 m²/s -70 m·v +25 s ·v² + 25 m v

56 m²/s = 25 s · v²

56 m²/s / 25 s = v²

v = 1.50 m/s

The speed of the moving walkway is 1.50 m/s

7 0
3 years ago
If the temperature of a gas is increased by 10x, what will happen to the volume?
xxMikexx [17]

The volume of a gas will increase by ten times if the temperature is increased by ten times.

<h3>Relationship between the volume of a gas and temperature</h3>

The relationship between the volume of a gas and its temperature is explained in Charles' law of gases which states that:

  • The volume of a fixed mass of gas is directly proportional to its temperature provided the pressure of the gas is kept constant.

This means that if the temperature of a gas is increased by any given factor, the volume increases by the same factor proportionally.

Therefore, if the volume of a gas will increase by ten times if the temperature is increased by ten times.

Learn more about gas volume and temperature at: brainly.com/question/18706379

8 0
3 years ago
What is force. what is a net force
algol13

Answer:

The net force is the vector sum of all the forces that act upon an object. That is to say, the net force is the sum of all the forces, taking into account the fact that a force is a vector and two forces of equal magnitude and opposite direction will cancel each other out.

Off google not mine

8 0
3 years ago
What are two ways that machines make work easier?
9966 [12]

Answer: example 1: increase force applied to object. Example 2: Increase distance over which work applied. Example 3: Change direction of applied force.

Explanation:

4 0
3 years ago
Other questions:
  • Discuss 2 things that affect the availability and use of earths natural resources sure to explain
    9·1 answer
  • A spring has a spring constant of 80 N/m. How much energy is stored in the spring when it is compressed 0.2 m past its natural l
    9·1 answer
  • A well lagged copper calorimeter of mas 120g contains 70g of water and 10g ice both at 0°C . Dry steam at 100°C is passed in unt
    6·1 answer
  • Westinghouse and edison fought what was known as the war of the currents. Eventually, westinghouse triumped using Alternating cu
    11·2 answers
  • Find the weight of a 15 kg rock. Acceleration due to gravity is 9.8 m/s2.
    13·2 answers
  • The strength of the gravitational attraction depends on the mass of the objects involved and on the distance between them. The g
    5·2 answers
  • Which two options describe physical properties of matter?
    11·2 answers
  • Nonrenewable Energy is technically not completely nonrenewable. Why is this?
    13·1 answer
  • A mechanic oils his tools between uses. Explain how this relates to friction andefficiency.
    9·1 answer
  • rocky the flying squirrel is carrying a nut of mass 0.5 kg while flying horizontally at a height of 15 m above the ground at a s
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!