A friend tells you that a different size of ball bearing might make your skateboard move faster. You try three different sizes and keep track of the time to roll 50 feet. You write down exactly how you tried the ball bearings on your skateboard and make a chart of the time it took to roll the 50 feet for each size ball bearing.

Answer:

Sample of inequality suff:income gap,health care,and social class

Answer: A basketball is something that can have a physical or chemical change done to it.

Explanation:

A basketball is made of matter. The fire itself is not a matter however, the wood that burns is matter. A basketball is very different from a fire because a basketball has some mass in it on the other hand fire does not contain any mass

Anything which has mass and occupies space is known as matter, mainly there are four states of matter solid liquid gas, and plasma.

These different states of matter have different characteristics according to which they vary their volume and shape.

For any substance to be considered as matter it must have to contain some mass and occupies some space.

As given in the problem statement a basketball is made of matter. The fire itself is not a matter however, the wood that burns is matter. A basketball is very different from a fire because a basketball has some mass in it on the other hand fire does not contain any mass.

For any substance to be considered as matter it must have to contain some mass and occupies some space.

Thus, a basketball is considered a matter but fire is not considered a form of matter.

Learn more about the matter here

brainly.com/question/9402776

#SPJ2

Answer

An electromagnetic wave transports its energy through a vacuum at a speed of 3.00 x 108 m/s (a speed value commonly represented by the symbol c).

Answer:

it travels through a vacuum at the speed of light

Answer:

3.75 hours

Explanation:

By [tex]v = \frac{d}{t}[/tex]

where v is the velocity (or speed in this case)

d is the distance travelled

t is the time taken

[tex]t = \frac{150}{40}=3.75[/tex]
Therefore it takes 3.75 hours for the bus to travel 150 km and 40 km/hr.

The period will be 11.18 years

your welcome

your girl unique

|| ▼ Answer ▼ ||

The orbital period is 31.62 years when the average distance from the sun is 10AU

|| ✪ Explanation✪ ||

Given:

The average distance of the planet from the sun is r = 10 AU

To find the orbital period.

According to Kepler's third law,

[tex]T^{2}[/tex] ∞ [tex]r^{3}[/tex]

[tex]T^{2} =kr^{3}[/tex]

[tex]T=\frac{3}{2}[/tex]

Here, the constant k is taken to be 1.

Substituting the values, the orbital speed will be

[tex]T=(10)\frac{3}{2}[/tex]

[tex]=31.62~years[/tex]

Final Answer: The orbital period is 31.62 years when the average distance from the sun is 10AU

Hope this helps!

If you have any queries please ask.

Answer:

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

volume = 15 mL

density = 7.1 g/mL

We have

mass = 7.1 × 15

We have the final answer as

Hope this helps you

the answer is 25N if u calculate it right the answer will be 25

The magnitude of the frictional force on the box is 25 N.

Frictional force is defined as the opposing force that resists the relative motion between surfaces.

Here,

Mass of the box, m = 10 kg

Force applied on the box, F = 55 N

Acceleration of the box, a = 3 m/s²

The frictional force, f opposes the applied force, F. So that the applied force must over come the frictional force in order to accelerate the box.

So,

F - f = ma

Frictional force, f = F - ma

f = 55 - (10 x 3)

f = 55 - 30

f = 25 N

Hence,

The magnitude of the frictional force on the box is 25 N.

To learn more about frictional force, click:

https://brainly.com/question/14662717

#SPJ2

Answer:

Final velocity= 84 m/s

Explanation:

V final= V initial + a * t

Vf = 0+ 12 (7)

Vf= 84 m/s

Answer:

I think it is the forth one

Answer:

the last one. "of the thumbprint searing her immutable brow"

Explanation:

I hope it help you : )

Answer:

300,000

Explanation:

its basicly adding 125+125+125+125+125+125+125+125+125 or125 x 9

Answer:

4.D.all of them are correct

5. B.Making observation

Answer:

1. evidence of volcanic activity

2. carbon dioxide levels

3. temperature

Explanation:

Layers of ice accumulate over seasons and years due to climate changes over time. Climate change causes snow accumulation, greenhouse gas concentrations, volcanic and solar activity.

Answer:

1. the object is moving away from the origin.

4. the object started at 2 meters.

5. the object is traveling at a constant velocity.

Explanation:

did it on edge

Answer:

Explanation:

Potential energy is when a object is not in motion and the ball is sitting on a shelf not being thrown around or rolling. kinetic energy is when a obeject is in motion and moving.

A binary star system that is detected from the drop in luminosity as one star passes in front of the other is called eclipsing. It has two stars.

A binary system is a system composed of two stars that exert gravitational forces on a group of celestial bodies.

In a binary system, planets and celestial bodies can exhibit well-defined or irregular (very unstable) orbits.

The eclipsing binaries are stars where binary planets orbit in a plane containing the same line of vision, thereby eclipsing each other.

Learn more about binary systems here:

https://brainly.com/question/15868824

Answer:

Yes, it is possible

Explanation:

If possible, since Newton's laws are based on the motion of bodies that have mass. An example of how a vehicle can be moved on the moon was seen during lunar exploration where American astronauts drove a buggy-cart on the moon for a period of time.

We must remember that Newton's Second Law tells us that force is equal to the product of mass by acceleration. In this way we have:

F = m*a

where:

F = force = [N]

m = mass [kg]

a = acceleration [m/s²]

The force is produced by internal combustion or by electric action of the vehicle engine, the mass is the mass of the vehicle plus that of the crew member and the acceleration is the one that develops due to the change of speed, from rest to a certain speed.

Answer:

metal atoms lose electrons to form positively charged ions. non-metal atoms gain electrons to form negatively charged ions

Explanation:

Answer:

10

Explanation:

It is true that a magnetic force must be exerted on the charge carriers in a conducting loop for the current to be induced in the loop.

Magnetic Force refer to force that attract or repel between electrically charged particles mainly because of their movement. This force is responsible for attraction of magnets.

The force on a conduction current loop in a uniform magnetic field is always zero. A current loop with magnetic moment pointing to the left magnitude decrease to the right.

Therefore, It is true that a magnetic force must be exerted on the charge carriers in a conducting loop for the current to be induced in the loop.

Learn more about magnetic Force from the link below.

https://brainly.com/question/2279150

Answer:

Standing wave,Also called stationary wave,combination of two waves moving in opposite direction,each having the same amplitude and frequency.They phenomenon is the result of interference;that is when waves are superimposed,their energies are either added together or cancelled out.

Explanation:

hpe it hlps u<°>

The combination of two waves is  "mechanical waves". The correct option is A.

A mechanical wave is a type of wave that requires a medium to travel through. In a mechanical wave, energy is transferred through the motion of particles in the medium, rather than the transfer of matter. Examples of mechanical waves include sound waves, water waves, and seismic waves.

In a mechanical wave, energy is initially added to a small region of the medium, which creates a disturbance that propagates outward as a wave. As the wave travels, particles in the medium oscillate back and forth around their equilibrium positions, transferring energy to neighboring particles. The wave continues to travel until it encounters a boundary, where it may be absorbed, transmitted, or reflected.

Mechanical waves can be classified as transverse waves or longitudinal waves, depending on the direction of particle motion relative to the direction of wave propagation. In a transverse wave, particle motion is perpendicular to the direction of wave propagation, while in a longitudinal wave, particle motion is parallel to the direction of wave propagation.

Mechanical waves are an important aspect of many natural phenomena and technological applications. They play a crucial role in fields such as acoustics, optics, and seismology, and have applications ranging from medical imaging to telecommunications.

Here in the Question,

A combination of two waves can be any type of wave, but it is most commonly a type of mechanical wave. Mechanical waves are waves that require a medium to travel through, such as sound waves or water waves.

The other three types of waves mentioned - longitudinal waves, surface waves, and transverse waves - are all specific types of mechanical waves.

Longitudinal waves are waves in which the particles of the medium vibrate back and forth parallel to the direction of wave propagation. Examples include sound waves and seismic waves.

Transverse waves are waves in which the particles of the medium vibrate perpendicular to the direction of wave propagation. Examples include light waves and electromagnetic waves.

Surface waves are waves that occur at the interface between two different media, such as the interface between air and water. Examples include ocean waves and seismic waves.

Therefore, the most appropriate answer to the question would be "mechanical waves".

To learn about the relationship between wave energy and amplitude click:

brainly.com/question/17003906

#SPJ2

Answer:

Vp = 1 [m/s]

Explanation:

In order to solve this problem, we must use the principle of conservation of the amount of movement. In the same way, analyze the before and after of the actions.

The moment before

The 50kg person is still hold (no movement) with the 2kg helmet

The moment after

The helmet moves at 25[m/s] in one direction, the person moves in the opposite direction, due to the launch of the helmet.

In this way we can apply the principle of conservation of movement, expressing the before and after. To the left we have the before and to the right of the equal sign we have the after.

Σm*V1 = Σm*V

where:

m = total mass = (2 + 50) = 52[kg]

V1 = velocity before the lunch = 0

(50 + 2)*V1 = (25*2) - (Vp*50)

0 = 50 - 50*Vp

50 = 50*Vp

Vp = 1 [m/s]

Answer: The law of conservation of energy is a physical law that states energy cannot be created or destroyed but may be changed from one form to another. Another way of stating this law of chemistry is to say the total energy of an isolated system.

Explanation:

Answer:

the sun gives off energy to the color panel

Answer: 1.232

Explanation:I remember having this as a hw and this was the answer correct me if I was wrong

From Hooke's law, the length of the spring after extension and after the mass is attached is 1.788 meters. Option B is the answer.

Hooke's law state that in an elastic material, the force applied is directly proportional to the extension provided that the elastic limit is not exceeded.

Given that a 12.0 kg mass is attached to 1.2 m long spring with a spring constant of 200.0 N/m.

The given parameters are:

According to Hooke's law

F = Ke

But F = mg

mg = Ke

Substitute all the parameters into the formula to get extension e

12 x 9.8 = 200e

e = 117.6 / 200

e = 0.588 m

The length of the spring after extension and after the mass is attached will be

[tex]L_{2}[/tex] = [tex]L_{1}[/tex] + e

[tex]L_{2}[/tex] = 1.2 + 0.588

[tex]L_{2}[/tex] = 1.788 m

Therefore, the correct answer is option B because the length of the spring after extension and after the mass is attached is 1.788 meters.

Learn more about Hooke's law here: https://brainly.com/question/12253978

sorry this is one side of the note

Legislators,political parties ,foreign diplomats are the groups influence the creation of public policy.

Public policy is an institutionalized plan to solve relevant and real-world problems.

It is driven by a conception and executed via programs as a course of action devised and/or adopted in response to societal challenges, often by a government or non-profit organization.

Legislators,political parties ,foreign diplomats are the groups of influence the creation of public policy.

Hence, option D,E,F are correct.

To learn more about the public policy, refer to the link;

https://brainly.com/question/14616070

#SPJ2

B. individual citizens

C. individual citizens

E. political parties

G. media organizations

Answer:

These patterns of stripes provide the history of seafloor spreading. Geophysicists can read these patterns from the magnetic anomalies they measure with a magnetometer. Where the magnetic wiggles, or anomalies, are broader, the spreading rate has been faster.

Explanation:

hope this helps

pls mark as brainliest

Answer:

I'm terrible at explaining so here's a screenshot

- Ripper

Explanation: