A person is running at 2 m/s and 20 s later is running at 22 m/s. What is
the acceleration of the runner?

Answer:

Compresion wave  

Explanation:

Answer:

375J

Explanation:

W=F x d

=250 x 15

=375J

The work W is equal to the force f times the distance d, or W = fd, to mathematically describe this idea. If the force is applied at an angle to the displacement, the work is W = fd cos.

Work in physics is the energy that is transferred to or from an item when a force is applied along a displacement. In its simplest form, For a constant force that is oriented in the same direction as the motion, it is easiest expressed as the product of the force's magnitude and the distance travelled.

A desk is being subjected to applied force if someone is pushing it across the room. The person's force applied to the desk is known as the applied force.

Mass and weight are not the same.The normal force is the supporting force exerted on an object when it collides with another stable object.

Therefore, W=F × d =250 × 15 =375J

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Answer:

All magnets have north and south poles. Opposite poles are attracted to each other, while the same poles repel each other. When you rub a piece of iron along a magnet, the north-seeking poles of the atoms in the iron line up in the same direction. The force generated by the aligned atoms creates a magnetic field.

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Answer:

acceleration = 0.013 m/s²

Explanation:

formula for acceleration is

a = (v-u) / t

a= (0.7-0.3) / 30

= 0.013

The acceleration of a turtle going from 0.3 m/s to 0.7 m/s in 30 seconds is 0.0133m/s²

Acceleration is defined as the change in velocity of a body with respect to time. Mathematically:

[tex]a=\frac{v-u}{t}[/tex]

v is the final speed = 0.7m/s

u is the initial speed = 0.3m/s

t is the time taken = 30seconds

Substitute the given values into the formula:

[tex]a=\frac{0.7-0.3}{30}\\a=\frac{0.4}{30}\\a = 0.0133m/s^2[/tex]

Hence the acceleration of a turtle going from 0.3 m/s to 0.7 m/s in 30 seconds is 0.0133m/s²

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Answer:

see below

Explanation:

a wave means one complete wave which is 1 period

so a) 5 complete waves

wavelength is the shortest distance between any two points in phase

so wavelength = 1 CM

amplitude of a wave is the maximum displacement of a particle from its rest position

so amplitude = 3 CM

hope this helps

Answer:

the force between the two charges is 198.37 N

Explanation:

Given;

charge of the first particle, Q₁ = -3 x 10⁻⁵ C

charge of the second particle, Q₂ = 9.0 x 10⁻⁵ C

distance between the two charges, r = 0.35 m

The force between the two charges is calculated from Coulomb's law;

[tex]F = \frac{kQ_1Q_2}{r^2}[/tex]

where k is Coulomb's constant = 9 x 10⁹ Nm²/C²

[tex]F = \frac{(9\times 10^9)(3.0\times 10^{-5})(9\times10^{-5} )}{0.35^2} \\\\F = 198.37 \ N[/tex]

Therefore, the force between the two charges is 198.37 N

Answer:

it's A

Explanation:

it's A because the ph level of water is just the level of the water if it's acidic or just a base

Answer:

go to the vault

Explanation:

Answer: Boat P

Explanation:

Multiple all of them mass times acceleration and which ever one was the greatest was the answer. Which was Boat P 0.2436

The minimum time taken to unwind the rubberband is by boat P.

The highest amount of force to unwind the rubberband is generated by boat P.

The table shows all the mass, acceleration and time of each boat. To unwind the rubber band, the required force can be calculated as given below.

Force = Mass [tex]\times[/tex] Acceleration

For boat N, force is [tex]f_n = 0.125\times 1.6 = 0.2 \;\rm N[/tex]

For boat P, force is [tex]f_p = 0.116\times 2.1 = 0.24 \;\rm N[/tex]

For boat Q, force is [tex]f_q = 0.130\times 1.0 = 0.13 \;\rm N[/tex]

For boat R, force is [tex]f_r = 0.118\times 1.8 = 0.21 \;\rm N[/tex]

Hence we can conclude that the highest amount of force to unwind the rubberband is generated by boat P.

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Answer:

velocity and mass

Explanation:

Most helpful Answer~

There are no options~

Anyway If the ball is of bad quality it will get deflated/ or strike out.

' The must reasonable thing that could happen is that the ball will bounce'

*Smile* :)  

Answer:

15kg

Explanation:

Acceleration = 10 m/s^2

Force = 150 N

Force = mass * acceleration

mass = force / acceleration

mass = 150 / 10

mass = 15 kg

Explanation:

incomplete question graph / fig is not available

Answer:

frictional force

Explanation:

Explanation:

a brain injury, a concussion, spinal cord injury, and a repetitive strain injury

Answer:

Ver explicacion abajo

Explanation:

En este caso para poder calcular el error relativo porcentual, es necesario calcular primero el error absoluto, que se calcula de la siguiente forma:

Error absoluto = Resultado exacto - aproximación

Sin embargo, no tenemos el resultado exacto de las medidas, pero podriamos conocerlo tomando el promedio de estas medidas y este es el que tomaremos como el verdadero resultado de las medidas:

Promedio de medidas = 1.34 + 1.35 + 1.37 + 1.36 / 4

Promedio de medidas = 1.355 m

Ya que tenemos el promedio, podemos calcular el error absoluto de cada medida y luego el error relativo porcentual:

Ea1 = 1.355 - 1.34 = 0.015

Ea2 = 1.355 - 1.35 = 0.005

Ea3 = 1.37 - 1.355 = 0.015

Ea4 = 1.36 - 1.355 = 0.005

Ya que tenemos los 4 errores absolutos, es posible calcular el porcentual:

%error relativo = (Error absoluto / resultado exacto) * 100

Aplicando la expresión con cada uno de los valores tenemos:

%Er1 = (0.015/1.34) * 100 = 1.12%

%Er2 = (0.005/1.35) * 100 = 0.37%

%Er3 = (0.015/1.37) * 100 = 1.09%

%Er4 = (0.005/1.36) * 100 = 0.37%

Espero que te sirva.

Answer:

a. Liquid state

b. At point R. The physical state of water at its boiling point temperature of 100 degree Celsius will be both liquid state as well as gaseous state.

c. at 110 degrees it is in gaseous state

Explanation:

Newton's 2nd law of motion..option b

Answer:

hhmmmmmhmmmm hmhmmmm hmmm yeah i got nothing

Explanation:

Answer: Gently reduce pressure on brakes – if on ice, push in the clutch to let the wheels turn freely.

Turn the steering wheel quickly – look and steer in the direction you want to go.

Counter-steer – as the vehicle gets back on course, counter-steer to avoid skidding in the opposite direction.

Explanation:

Answer:

:Meterology, Seismology,

Answer: c

Explanation:

If the net force on the bowling ball is tripled, its new acceleration is 21 m/s². The correct option is d.

The force is the action of push or pull which can move or stop the object.

The initial force is F = mass x acceleration

F = 3.17515 kg x 7 m/s²

F = 22.23 N

When the net force is tripled, the new acceleration will b e

3 x F =m x a'

3 x 22.23 = 3.17515 x a'

a' = 21.003 m/s²

Thus, the new acceleration is 21 m/s². The correct option is d.

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Answer:

15m/s

Explanation:

velocity = displacement/time

= (200+100)/20 = 300/20 = 15m/s

Answer:

i think it is 0.06 but im not sure sorry if im wrong

Explanation: