If a bicyclist has a mass of 70 kg and a velocity of 25 m/s, what is the momentum of the bicyclist? p=mv *

Answer:

9

Explanation:

Answer:

9

Explanation:

Because its right!

Answer:I think Fossils show that some animals are extinct

Explanation:

Please mark as brainliest for me.Thanks

The answer is B: Conduction

The resistance indicated by the platinum thermometer at 200°C is 1.648 times the reference resistance Ro at 0°C.

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You know now that 1200 km is 11° of latitude on the planet. So its circumference is roughly approximately around something like about

(360/11) • (1200 km) = 39,273 km

If it was good enough for Eratosthenes, then we can't complain.

Answer:

Explanation:

Mass ( m ) = 2 kg

Speed of the object (v) = 6 metre per second

Kinetic energy =?

Now,

We have,

Kinetic Energy = \( \frac{1}{2} \times m \times {v}^{2} \)

Plugging the values,

\( = \frac{1}{2} \times 2 \times {(6)}^{2} \)

Reduce the numbers with Greatest Common Factor 2

\( = {(6)}^{2} \)

Calculate

\( = 36 \: joule\)

Hope this helps...

Good luck on your assignment...

The Kinetic energy of the object will be "36 joules".

The excess energy of moving can be observed as that of the movement of an object, component, as well as the group of components. There would never be a negative (-) amount of kinetic energy.

According to the question,

Mass of object, m = 2 kg

Speed of object, v = 6 m/s

As we know the formula,

→ Kinetic energy (K.E),

= \(\frac{1}{2}\) × m × v²

By substituting the values, we get

= \(\frac{1}{2}\) × 2 × (6)²

=  \(\frac{1}{2}\) × 2 × 36

= 36 joule

Thus the above answer is appropriate.

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Explanation: Magma is molten rock found below the earth's surface. ... On the other hand, if the rocks are under greater pressure, they will require higher temperatures to melt. Melting of rocks typically occurs in the lower lithosphere or upper asthenosphere. The earth gets hot pretty quickly as you dig down from the earth's surface.

An axon is a long, tubelike structure extending from a neuron's cell body.

option A is the correct answer.

An axon is a long, tubelike structure extending from a neuron's cell body.

An axon is respnsible for transmitting nerve impulses, or action potentials, away from the cell body to other neurons, muscles, or glands.

Thus, an axon is a long, tubelike structure of a neuron that carries nerve impulses away from the cell body and towards other neurons, muscles, or glands. It is the primary means by which neurons transmit information throughout the nervous system.

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Answer:

letter B.

Explanation:

Answer: A

0.1

Explanation: I did this

The value of a and b is 2.7 and -2.9 respectively.

The vectors A, B, and C can be represented as:

A = 10i - 16j m/s

B = 3i + 8j m/s

C = 6i + 20j m/s

The equation and equate the coefficients of the 'i' and 'j' terms on both sides:

ai + 3bi + 6 = 0 (for the 'i' component)

-16aj + 8bj + 20 = 0 (for the 'j' component)

From the first equation:

a + 3b = -6 (equation 1)

From the second equation:

-16a + 8b = -20 (equation 2)

Multiply equation 1 by 8 and equation 2 by 3 to eliminate 'b':

8a + 24b = -48 (equation 3)

-48a + 24b = -60 (equation 4)

Adding equation 3 and equation 4 eliminates 'b':

8a + 24b + (-48a + 24b) = -48 + (-60)

-40a = -108

a = -108 / -40

a = 2.7

Substituting the value of 'a' into equation 1:

2.7 + 3b = -6

3b = -6 - 2.7

3b = -8.7

b = -8.7 / 3

b = -2.9

Therefore, 'a' is  2.7, and 'b' is -2.9, such that aA + bB + C = 0.

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Answer:25N/

Explanation:

Answer:

The acceleration of the object occurred at 2.95 s

Explanation:

Given;

initial angular velocity of the object, ω = 0

angular acceleration, α = 2.3 rad/s²

angular displacement of the object, θ = 10 radians

The time of the motion is given by the following kinematic equation;

θ = ω + ¹/₂αt²

θ = 0 + ¹/₂αt²

θ = ¹/₂αt²

\(t^2 = \frac{2 \theta}{\alpha}\\\\t = \sqrt{\frac{2 \theta}{\alpha}}\\\\t = \sqrt{\frac{2 *10}{2.3}}\\\\t = 2.95 \ s\)

Therefore, the acceleration of the object occurred at 2.95 s

The average linear expansion coefficient for the copper metal in the given temperature range, given that the metal expands by a length of 3 mm is 0.0037 °C¯¹

The following data were obtained from the question:

The coefficient of expansion for the metal can be obtained as illustrated below:

α = ΔL / L₁(T₂ – T₁)

α = 3 / [40.102 × (40 – 20)]

α = 3 / [40.102 × 20]

α = 3 / 802.04

α = 0.0037 °C¯¹

Thus, we can conclude that the coefficient of expansion for the metal is 0.0037 °C¯¹

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The gravity on the Earth has acceleration is smallest in magnitude

Given:

To find:

The accelerations with the smallest magnitude

Solution:

\(=\frac{30 m/s-0 m/s}{2s}=15 m/s^2\)

The magnitude of the acceleration is 15.

\(=\frac{10m/s-30 m/s}{1.5 s}=-13.4 m/s^2\)

The magnitude of the deceleration is 13.4.

The value of the acceleration due to gravity = \(g = 9.8 m/s^2\)

The magnitude of the acceleration is 9.8.

9.8 < 13.4 < 15

The gravity on the Earth has acceleration is smallest in magnitude.

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When you change the light from green to red, the number of waves remains the same.

Light waves behave similarly throughout the electromagnetic spectrum. Depending on the nature of the item and the light's wavelength, a light wave can be transmitted, reflected, absorbed, refracted, polarized, diffracted, or dispersed when it strikes a surface.

The number of waves doesn't vary when the light changes from green to red. The distance between each wave's consecutive peaks, or wavelength, determines the color of light. Red and green light both have waves with a set number of peaks and troughs per unit of time, despite green light having a shorter wavelength. As a result, the number of waves is unaffected by changing the colour of the light.

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(a) The minimum force F he must exert to get the block moving is 38.9 N.

(b) The acceleration of the block is 0.79 m/s².

The minimum force F he must exert to get the block moving is calculated as follows;

Fcosθ = μ(s)Fₙ

Fcosθ = μ(s)mg

where;

F = [0.1(36)(9.8)] / [(cos(25)]

F = 38.9 N

F(net) = 38.9 - (0.03 x 36 x 9.8) = 28.32

a = F(net)/m

a = 28.32/36

a = 0.79 m/s²

Thus, the minimum force F he must exert to get the block moving is 38.9 N.

The acceleration of the block is 0.79 m/s².

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Answer:

The right answer is "0.273 m".

Explanation:

Given:

Power (P),

\(\frac{1}{f} = 2D\)

Near point,

u = 0.6 m

As we know,

⇒ \(\frac{1}{v} -\frac{1}{u}=\frac{1}{f} = 2\)

By substituting the values, we get

⇒ \(\frac{1}{v} -\frac{1}{0.6} =2\)

            \(\frac{1}{v}=2+\frac{1}{0.6}\)

            \(\frac{1}{v} =\frac{1.2+1}{0.6}\)

            \(\frac{1}{v}=\frac{2.2}{0.6}\)    

By applying cross-multiplication, we get

          \(0.6=2.2 \ v\)

            \(v = \frac{0.6}{2.2}\)

      \(S_{near} = 0.273 \ m\)

Answer:

What was it

Explanation:

It would increase; g is inversely proportional to the square of the radius of the Earth. The correct option is A.

A current idea in geology that describes how the earth's crust is made up of a few big, hard plates that move independently of one another, causing deformation, volcanism, and seismic activity along their boundaries.

Because it explains how mountain ranges, earthquakes, volcanoes, shorelines, and other features often emerge where the moving plates contact along their boundaries, plate tectonics provides "the overall picture" of geology.

The Earth has been shrinking as it gradually cools, according to some geological hypotheses from the nineteenth century that have now been completely debunked.

If that were the case, it would rise since g is inversely proportional to the square of the Earth's radius.

Thus, the correct option is A.

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Answer:

6000J

Step-by-step:

To calculate the energy supplied by the heater, we can use the formula:

Energy = Power x Time

where power is measured in watts (W) and time is measured in seconds (s). However, in this problem, we are given the power in watts and the time in minutes, so we need to convert the time to seconds before we can use the formula.

1 minute = 60 seconds

Therefore, 2.0 minutes = 2.0 x 60 seconds = 120 seconds

Now we can use the formula to calculate the energy supplied by the heater:

Energy = Power x Time

Energy = 50 W x 120 s

Energy = 6000 J

Therefore, the energy supplied by the heater is 6000 joules (J).

Hope this helps!

Answer:

\(150\ N\)

Explanation:

\(We\ are\ given:\\Acceleration\ of\ the\ elevator= 3\ m/s^2\\Assumed\ mass\ of\ the\ man\ standing\ on\ it=50\ kg\\We\ know\ that,\\Force=Mass*Acceleration\\Or,\\F=ma\\Hence,\\Substituting\ m=50, a=3\ m/s^2,\\Force\ acting\ on\ the\ floor\ of\ the\ elevator=3*50=150\ Newtons\)

Answer:

The fields are at right angles to each other and to the direction of the wave.

Explanation:

For the pair of fuzzy dice hanging by a string from the rearview mirror, while accelerating from a stop-light to 28 m/s in 6.0 s, the string makes an angle of 25.5 degrees with the vertical.

An angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.

Parameters given include:

velocity: 28,/s time= 6.0 seconds

a = v/t = 28m/s / 6.0s = 4.667 m/s²

Taking into account the forces acting on the dice...there is a force of gravity acting straight down with a magnitude of mg.

so we have that

Angle = tan-1(a/g)

Angle = tan-1(4.667 / 9.8) =  25.5 degrees.

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Answer:

The characteristics that determine how easily two substances change temperature are:

The volume and density of the substances and the amount of time they are in contact do not directly affect how easily they change temperature.

Explanation:

Water's high specific heat capacity helps it resist changes in temperature, making it a useful tool for organisms to regulate their body temperature.

Water helps regulate body temperature through several mechanisms.

In addition, water's high specific heat capacity allows it to resist changes in temperature, which helps the body maintain a constant internal temperature even in the face of external temperature fluctuations.

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Answer:

The person travelled a total distance of (40+30) feet = 70 feet

Displacement= 50feet (im not positive on the displancement)

displacemeny is the shortest distance between two pionts

Explanation:

The density of water at STP, which is \(997 kg/m^3\), we can see that Saturn is less dense than water.

To determine whether Saturn is less dense than water, we must compute its density and compare it to the density of water at standard temperature and pressure (STP), which is \(997 kg/m^3\).

Saturn's density can be computed using the following formula:

density equals mass divided by volume

Saturn's mass and volume may be computed given its mass and radius.

The volume of Saturn can be determined using the sphere volume formula:

volume =\((4/3) \pi (r^3)\)

where r is Saturn's radius.

Filling in the blanks:

volume = \((4/3) \pi (5.6 \times 107) m^3\)

8.27 x 1023 \(m^3\)volume

Saturn's mass is given as \(5.68 \times 10^{26} kg.\)

We can now compute Saturn's density:

density equals mass divided by volume

density= \((5.68 x 10^{26 }kg\)) /\((8.27 \times 10^{23 }\)m³) a density of\(687 kg/m^3\)

This is due to the fact that Saturn is mostly made up of hydrogen and helium, which are far less dense than water. In reality, Saturn is the least dense planet in the Solar System, and it would float in a large enough body of water.

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Answer:

1.85 J/K

Explanation:

The computation of total change in entropy is shown below:-

Change in Entropy = Sum Q ÷ T

= \(\frac{-heat\ entering\ the\ reservoir}{Reservoir\ 1\ Temperature} + \frac{Conduction\ of\ heat}{Reservoir\ 2\ Temperature}\)

\(= \frac{-1760}{563} + \frac{1760}{354}\)

= -3.12 + 4.97

= 1.85 J/K

Therefore for computing the total change in entropy we simply applied the above formula.

As we can see that there is heat entering the reservoir so it will be negative while cold reservoir will be positive else the process would be impossible.

Answer:

10N to the left side towards you

Explanation:

The net force is the resultant force that acts on a body.

Force is a push or pull on a body.    

 Push to left side  = 25N

 Pull to the right  = 15N

Net force  = Push to left side   -  Pull to the right  = 25N  - 15N

 Net force  = 10N to the left side towards you

The net force is therefore 10N to the left side towards you