Help Easy Question and Brainly. What's the answer?????

Answer:

yes it does exert a force, it pushes it up

Explanation:

this is called normal force

if it didn't exert a force the book would keep going down

according to newton every force has an equal amd opposite reaction

so the book exerts a force on the table and vice versa

hope this helped

Answer:

I believe that it will be 10kg of water

Explanation:

Because a measure of the amount of information on a storage medium (tape or disk). For magnetic tape it is the amount of information recorded per unit length of tape (bits per inch or millimeter); for a disk, a fixed number of bits per sector, sectors per track, and tracks per disk.

The density in both the case will be equal, just the difference will be in the volume they occupy.

In practice, density is the weight of a substance per unit volume. Water has a density of about 1 gram per milliliter, but this varies depending on temperature and whether or not substances are dissolved in it. Because ice is less dense than liquid water, it floats in your glass.

This allows many aquatic organisms to survive the winter. If ice were more dense than water, it would continue to freeze and sink until the entire lake was frozen.

Any amount of water has the same density. Whereas one gram of water has a volume of one milliliter, ten grams have a volume of ten milliliters.

Thus, the density will be same.

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Answer:

B. measure the distance that the plane flew and record it

Explanation:

Answer:

Hennessey Venom F5. Power: 1600+ bhp. Price: $1.6 million.

Koenigsegg Regera. Power: 1500 bhp.

Bugatti Chiron. Power: 1479 bhp.

NIO EP9. Power: 1341 bhp. Price: $1.48 million.

Answer:

courts of appeals

Explanation:

hope this helps

Answer:

Typically found in eukaryotic cells, centrioles are cylindrical (tube-like) structures/organelles composed of microtubules. In the cell, centrioles aid in cell division by facilitating the separation of chromosomes. For this reason, they are located near the nucleus.

Answer:

sorry im just gettig points but the actaul anserw is on top of this oneExplanation:

Bye

Answer:  One of the signs a chemical reaction is taking place is the presence of bubbles. :)

Answer:

Probable Reason - Break in filament of electric bulb

Explanation:

An electric bulb might not glow even if it is connected to the cell, possibly  because of break in the filament of electric bulb. As, break in bulb's filament implies break in flow of electric current - between electric cells' terminal.

An evident example of this is , a fuse bulb doesn't light up as the current doesn't pass through filament.

Answer:

I would include extra insulation, a heating system, and some snug-fitting sweaters.

Explanation:

that way i won't get cold

Answer: -10m/s

Explanation:

Velocity is solved using the equation displacement over time. Part C shows a displacement or change in x of 30 and a change in time of 3 secs (7-10) so the equation would be 30m/3s= -10m/s it is negative because look at the slope. Its decreasing right? So that means the objects is slowing down which means it can't have a positive velocity

Answer:

When an apple falls from the tree to the ground, its energy of position (stored as gravitational potential energy) is converted to kinetic energy, the energy of motion, as it falls. When the apple hits the ground, kinetic energy is transformed into heat energy.

Explanation The regular reflection takes place when the light rays are incident on a polished smooth surface like a plane mirror, a stainless steel sheet and a thin sheet of aluminum, so, the reflected rays of light move only in a fixed direction.

Answer:

A thumb only has one joint and two phalanges. The thumb is referred to as “the big finger".

Brainlist pls!

Answer:

just divide 22 N by 20 kg to get the acceleration in m/s2

Explanation:

I hope this is right-

Answer:

B..it is conserved

Explanation:

Answer: 21.9 mm

Explanation:

Given that five independent measurements are made of the diameter of a cylinder. Results, in mm, are: 21.8; 21.6; 22.1; 21.9; 22.1. What should be the reported value of the cylinder's diameter?

The measurement of the diameter of cylinder is measured several time in order to reduce the uncertainty called random error.

The reported value of the cylinder's diameter should be the average or the mean value of the whole measurement.

That is

Mean = (21.8 + 21.6 + 22.1 + 21.9 + 22.1) ÷ 5

Mean = 109.5 ÷ 5

Mean = 21.9 mm

Therefore, the reported value of the cylinder diameter will be 21.9 mm

Answer:

Atoms are made up of even smaller particles called protons, electrons & neutrons (sub-atomic particles)

Atoms are made up of smaller particles called subatomic particles.

An atom is defined as the smallest indivisible particle of an element. It is made of subatomic particles which are:

Now the Neutron and Proton make up the nucleus which is at the core(middle) of the atom whole the electron rotates around the orbits that  surrounds the nucleus.

The Neutron has no charge.

The Proton is positively charged.

The electron is negatively charged.

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Answer:

Going downhill at a steady speed, the forces along the direction of motion are:

net force = m * a = 0

W * sin(7) - Fdrag = 0

so Fdrag = m * g * sin(7) where m=62.kg and g=9.8m/sec^2

Explanation:

Answer: A. An ice hockey player picks up a trophy as he slides past it

Explanation:

A PE X

The statement that best describes a perfectly inelastic collision is

C. A surfer falls off of his surfboard when a wave hits him.

A collision is the interaction between two bodies in such a way that the momentum and velocity of one body gets changed due to the presence of other body. There are three types of collision-

1. Elastic collision

2. Inelastic collision

3. Perfectly inelastic collision.

In all types of collision , the momentum of the system before collision and after collision always remains same or we can say that momentum is conserved in collisions

An elastic collision is the one in which kinetic energy is also conserved and coefficient of restitution is one. Both the bodies move separately with different velocities after elastic collision.

In inelastic collision  there is a loss of kinetic energy and coefficient of restitution is less than one.

In perfectly inelastic collision there is maximum loss of kinetic energy and coefficient of restitution is zero. Both the bodies stick together after collision and move with same velocity

Coefficient of restitution is the  ratio of  relative velocity of separation after collision to relative velocity of approach before collision.

A surfer falls of his surfboard when a wave hits him is an example of perfectly inelastic collision because in this when water hits the surfers he falls of and sticks to the water , and will also now move with the velocity of water .

So  when the surfer falls off his surfboard when a wave hits him is perfectly inelastic collision.

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Answer:

a) 361.7 Hz

b) 318.1 Hz

c) 29.3 m/s

Explanation:

a) Speed of sound in 20 degrees celcius is 343 m/s.

Use v=wavelength*frequency to find wavelength.

343=wavelength*340

wavelegth=1.009 meters

Relative speed of waves to observer A = 343+22 = 365 m/s

Plug it back in.

365=1.009*F

F=361.7 Hz

b) Relative speed of waves to observer B = 343-22 = 321 m/s

Plug it back in.

321=1.009*F

F=318.1 Hz

c) STATIONARY CAR, so 369Hz=v/1.009. v=372.3, 372.3-343=29.3m/s!

Answer:

Cell phone signals are electromagnetic waves, which are reflected by the aluminum foil

Answer:

I think the best answer would be the first but am I the only one wondering why the mom didn't just turn off the phone but instead she had to be extra and wrap them up like a gift to give them after dinner.

Answer:

According to me Option is the right answer

A. 8,400 J

Answer:

Hypothesis.

Explanation:

Not a question, not a summary, and not an experiment.

The gravitational force between Venus and the Sun, seperated at the distance of 1.082×10¹¹ m is 5.520×10²² N.

Gravitational force is the attractive force between two bodies. It is applicable to all the bodies have masses and it is called as Universal law of gravitation.

Grarvitational force is the attractive force is directly proportional to the product of two masses and is inversely proportional to the square of distance between them.

F ∝ m₁ × m₂ / d², m₁ and m₂ is the mass of two bodies and d² is the distance between two bodies. The SI unit of mass is kg and SI unit of distance is m. The SI unit of force is newton.

From the gravitational force,

F = G (m₁×m₂ / d²)

G represents gravitational constant and is equal to 6.67× 10⁻¹¹ N.m²/kg².

From the given,

m₁ ( mass of venus ) = 4.87 x 10²⁴kg

m₂ ( mass of sun) = 1.989 x 10³⁰ kg

d² ( distance between sun and venus) = 1.082 x 10¹¹ m.

G = 6.67 ×10⁻¹¹ N.m² / kg²

F = G (m₁×m₂ / d²)

  = 6.67 ×10⁻¹¹ × 4.87 x 10²⁴× 1.989 x 10³⁰ / (1.082 x 10¹¹)²

 = 5.520 × 10²² N

The gravitational force between the venus and sun at the distance of  1.082 x 10¹¹ is 5.520× 10²² N.

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