A 5-kg object is moving with a speed of 4 m/s at a height of 2 m. The potential energy of the object is approximately
J.

Answer:

initial velocity (u)=5m/s

final velocity (v)=?

acceleration (a)=3m/s^2

time (t)=4s

now,

acceleration (a)=v-u/t

3=v-5/4

3×4=v-5

12=v-5

12+5=v

17=v

v=17

Topic: The Effect of Temperature on Enzyme Activity in Plants
Hypothesis: I predict that as the temperature increases, the rate of enzyme activity in plants will also increase. As the temperature decreases, the rate of enzyme activity in plants will decrease.

Temperature is the measure of the average kinetic energy of the particles in a substance. It is measured in degrees Celsius (°C), Fahrenheit (°F), or Kelvin (K). Temperature is determined by the amount of heat present in a substance, which is a measure of the average kinetic energy of its particles. Heat is the energy transferred from a hotter object to a cooler one. When two objects of different temperatures come into contact, heat will flow from the hotter object to the cooler one until both objects reach the same temperature. Temperature can be affected by many factors, such as the weather, the amount of sunlight, and the activity of the particles in a substance.

To learn more about temperature
https://brainly.com/question/27944554
#SPJ1

The first student's observation tells us that the frequency of the wave is 20/30 Hz or 2/3 Hz. Using the formula v = λf, we can find the velocity of the wave, where v is the speed of the wave, λ is the wavelength and f is the frequency.

To find the velocity we need to find λ. The second student's observation tells us that the wave travels 225 cm in 10.0 s. Therefore, the velocity of the wave is 22.5 cm/s. If we substitute this and the frequency into the formula, we get

22.5 cm/s = λ x 2/3 Hz

Solving for λ, we get λ = 33.75 cm. Therefore, the wavelength of the wave is 33.75 cm. Thus, we get A.

37.2 cm is the wavelength of the waves when a physics lab, a harmonic wave travels down a string.

Given that,

In a physics lab, a harmonic wave travels down a string. In 30.0 seconds, one student counts 20 vibrations. A second student finds that a wave's greatest peak travels 225 cm along a rope in 10.0 seconds.

We have to find what is the wavelength of the waves.

We know that,

The formula to find the wavelength is

λ = \(\frac{v}{f}\)

Here,

λ  is wavelength,

v is speed and

f is frequency.

So,

v is the ratio of maximum distance of wave travels by the time.

v = \(\frac{225}{10.0}\) = 22.5 cm per second.

f = \(\frac{20}{30}\) = 0.6 hz.

Now,

λ = \(\frac{v}{f}\) = \(\frac{22.5}{0.6}\) = 37.2 cm

Therefore, 37.2 cm is the wavelength of the waves.

To know more about wavelength visit:

https://brainly.com/question/31143857

https://brainly.com/question/12924624

Answer:

identify who they are as a person

Explanation:

The statement that states because the poles of Uranus spend 42 years in darkness, the temperatures between the northern and southern hemispheres of Uranus differ by as much as hundreds of kelvins, depending on where Uranus is in its orbit is false.

Why does Uranus have 42 years of daylight?

Uranus is notable for its massive 98-degree tilt on its axis. It is essentially lying on its side, with the poles receiving direct sunshine. Extreme seasons result, and when the Sun rises at one of the poles, that pole receives direct sunlight for 42 years.

What is the temperature of Uranus?

The temperature of Uranus averages minus 320 degrees Fahrenheit (-195 degrees Celsius), according to NASA. Uranus holds the record for the coldest temperature ever measured in the solar system — minus 371.56 degrees F.

To know more about Uranus, check out:

https://brainly.com/question/13775707

#SPJ4

Answer:

Explanation:

From the given information:

Distance \(d_i = 4.8 \times 10^{10} \ m\)

Speed of the comet \(V_i = 9.1 \times 10^{4} \ m/s\)

At distance \(d_2 = 6 \times 10^{12} \ m\)

where;

mass of the sun = \(1.98 \times 10^{30}\)

\(G = 6.67 \times 10^{-11}\)

To find the speed \(V_f\):

Using the formula:

\(E_f = E_i + W \\ \\ where; \ \ W = 0 \ \ \text{since work done by surrounding is zero (0)}\)

\(E_f = E_i + 0 \\ \\ K_f + U_f = K_i + U_i \\ \\ = \dfrac{1}{2}mV_f^2 + \dfrac{-GMm}{d^2} = \dfrac{1}{2}mV_i^2+ \dfrac{-GMm}{d_i} \\ \\ V_f = \sqrt{V_i^2 + 2 GM \Big [ \dfrac{1}{d_2}- \dfrac{1}{d_i}\Big ]}\)

\(V_f = \sqrt{(9.1 \times 10^{4})^2 + 2 (6.67\times 10^{-11}) *(1.98 * 10^{30} ) \Big [ \dfrac{1}{6*10^{12}}- \dfrac{1}{4.8*10^{10}}\Big ]}\)

\(\mathbf{V_f =53.125 \times 10^4 \ m/s}\)

There are 90 phones of volume, 10-7 W/m2 of sound intensity, and 0.0314 watts of source power.

A straightforward frequency analysis compares the values of the fields you provide and generates a report listing each value for those fields along with the frequency at which each value occurs.

The rate at which a sound power wave repeats itself, also known as frequency or pitch, is measured in cycles per second. Bullfrog calls and cricket chirps have lower frequencies than drum beats and whistles, respectively.

To know more about Frequency visit:

https://brainly.com/question/14316711

#SPJ1

The given statement 'In closed system, no object enter or leave the system' is true.

A closed system is a system in which system does not allow matter in or out from the system.

Answer:

The frequency of light can be calculated using the formula:

`c = λv`

Where `c` is the speed of light in a vacuum, `λ` is the wavelength of light, and `v` is the frequency of light.

The speed of light in a vacuum is `3.00 × 10^8 m/s`.

To convert the wavelength from nanometers to meters, we need to divide by `1 × 10^9`.

Thus, the frequency of light with a wavelength of 655 nm is:

`v = c/λ`

`v = (3.00 × 10^8 m/s)/(655 × 10^-9 m)`

`v = 4.58 × 10^14 Hz`

Therefore, the frequency of light with a wavelength of 655 nm is `4.58 × 10^14 Hz`.

Similarly, the frequency of light with a wavelength of 515 nm is:

`v = c/λ`

`v = (3.00 × 10^8 m/s)/(515 × 10^-9 m)`

`v = 5.83 × 10^14 Hz`

Therefore, the frequency of light with a wavelength of 515 nm is `5.83 × 10^14 Hz`.

Finally, the frequency of light with a wavelength of 475 nm is:

`v = c/λ`

`v = (3.00 × 10^8 m/s)/(475 × 10^-9 m)`

`v = 6.32 × 10^14 Hz`

Therefore, the frequency of light with a wavelength of 475 nm is `6.32 × 10^14 Hz`.

So, the frequency of light with a wavelength of 655 nm is `4.58 × 10^14 Hz`, the frequency of light with a wavelength of 515 nm is `5.83 × 10^14 Hz` and the frequency of light with a wavelength of 475 nm is `6.32 × 10^14 Hz`.

in projectile motion, an object moves parabolic path. Which means the answer is b.

Answer:

Seismic attenuation describes the energy loss experienced by seismic waves as they propagate. It is controlled by the temperature, composition, melt content, and volatile content of the rocks through which the waves travel.

Explanation:

Answer:

Im pretty sure its 7.5

Explanation:

your initial ( starting) velocity was 75. Your final velocity was 0. 75 / 0 = 0 m/s.

BUT you are calculating your acceleration, so it would be 75 - 0 divided by 10 = 7.5

1) The force acting on the object during the time interval 0-3 seconds is 1/3 N.

2) The force acting on the object during the time interval 6-10 seconds is -0.5 N.

3) There is no time interval in which no force acts on the object.

(i) Force acting on the object in time interval 0-3 seconds. Force acting on the object is equal to the product of its mass and acceleration, i.e.,F = ma.

In the given velocity-time graph, the acceleration of the object can be determined by determining the slope of the velocity-time graph from 0 to 3 seconds.

Slope = (change in velocity) / (change in time)= (20-0) / (3-0) = 20/3 m/s^2

Acceleration, a = slope= 20/3 m/s^2

Mass of the object, m = 50 g = 0.05 kg

∴ Force acting on the object, F = ma= 0.05 × 20/3= 1/3 N.

Therefore, the force acting on the object during the time interval 0-3 seconds is 1/3 N.

(ii) Force acting on the object in time interval 6-10 seconds. Similar to the first question, the force acting on the object in time interval 6-10 seconds can be determined by determining the acceleration of the object during this time interval.

The slope of the velocity-time graph from 6 seconds to 10 seconds can be determined as follows:

Slope = (change in velocity) / (change in time)= (-20-20) / (10-6) = -40/4= -10 m/s^2 (negative sign indicates that the object is decelerating)

Mass of the object, m = 50 g = 0.05 kg

∴ Force acting on the object, F = ma= 0.05 × (-10)= -0.5 N.

Therefore, the force acting on the object during the time interval 6-10 seconds is -0.5 N.

(iii) Time interval in which no force acts on the object. There is no time interval in which no force acts on the object. This is because, as per Newton's first law of motion, an object will continue to remain in a state of rest or uniform motion along a straight line unless acted upon by an external unbalanced force.In other words, if the object is moving with a constant velocity, there must be a force acting on the object to maintain its motion.

Therefore, there is no time interval in which no force acts on the object.

For more such questions on force, click on:

https://brainly.com/question/12785175

#SPJ8

Answer:

Conduction: Touching a stove and being burned. Ice cooling down your hand. .

Explanation:

The distance time graph can be used to show the distance an object moves  along a straight line

The best interpretation of the balls motion is given by the option;

The ball doesn't move at first, Then it moves backwards and finally stops

The data points in the given distance time graph are presented as follows;

\(\begin{array}{|c|cc|}Time \, (s)&&Position \, (m)\\0&&5\\3&&5\\8&&0\\10&&0\end{array}\right]\)

The velocity of a distance time graph is given by the slope of the graph as follows;

The velocity from 0 to 3 seconds, \(v_{(0 \ to \ 3)}\) = (5 - 5)/(3 - 0) = 0/3 = 0, therefore, in the first few seconds, the ball has zero velocity and is not moving, which gives;

The ball doesn't move at first

The velocity from 3 seconds to 8 seconds, \(v_{(3 \ to \ 8)}\) = (0 - 5)/(8 - 3) = -1

The velocity from 3 seconds to 8 seconds, = -1 m/s, that is, the ball is moving backwards. Therefore;

The ball moves backwards

The velocity from 8 seconds to 10 seconds, \(v_{(8 \ to \ 10)}\)  = (0 - 0)/(10 - 8) = 0

Therefore;

The ball stops

Combining, we get;

The ball doesn't move at first, Then it moves backwards and finally stops

Learn more about the distance time graph here:

https://brainly.com/question/22125199

The statement regarding work and retirement that is true is that most older Americans say they would prefer to enter retirement gradually.

Retirement is defined as the time in an individuals life that such leaves the Labour market or the workforce.

In some countries such as the United States of America, most elderly citizen prefer taking retirement process slowly.

Therefore, the statement regarding work and retirement is that retirement is a gradual process which one starts to process while actively in service

Learn more about retirement here:

https://brainly.com/question/3090325

#SPJ1

The energy input at aphelion (farthest from the sun) is 92% of the intensity at perihelion (closest to the sun) because of the inverse-square law, which states that the intensity of radiation decreases with the square of the distance from the source.

However, the difference in energy input does not solely explain the difference in surface temperature from winter to summer.

Other factors, such as the Earth's axial tilt, atmospheric composition, and cloud cover also play a role in determining the surface temperature.

Evidence from climate models and observations indicate that changes in these factors, especially changes in the number of greenhouse gases in the atmosphere, can have a significant impact on global temperature patterns.

In conclusion, while the inverse-square law affects the intensity of solar radiation, it is not the sole factor in determining surface temperature, and the role of other factors must be considered to fully understand seasonal and climatic variations.

Read more about gravitational force here:

https://brainly.com/question/72250

#SPJ1

Answer:

D

Explanation:

the other students are making fun of her most likely because they are jealous that she is successing in school. hope this helps :)

Answer:

D

Explanation:

Answer:

1.424 μC

Explanation:

I'm assuming here, that the charged ball is suspended by the string. If the string also is deflected by the angle α, then the forces acting on it would be: mg (acting downwards),

tension T (acting along the string - to the pivot point), and

F (electric force – acting along the line connecting the charges).

We then have something like this

x: T•sin α = F,

y: T•cosα = mg.

Dividing the first one by the second one we have

T•sin α/ T•cosα = F/mg, ultimately,

tan α = F/mg.

Since we already know that

q1=q2=q, and

r=2•L•sinα,

k=9•10^9 N•m²/C²

Remember,

F =k•q1•q2/r², if we substitute for r, we have

F = k•q²/(2•L•sinα)².

tan α = F/mg =

= k•q²/(2•L•sinα)² •mg.

q = (2•L•sinα) • √(m•g•tanα/k)=

=(2•0.5•0.486) • √(0.0142•9.8•0.557/9•10^9) =

q = 0.486 • √(8.61•10^-12)

q = 0.486 • 2.93•10^-6

q = 1.424•10^-6 C

q = 1.424 μC.

The fictional people and circumstances in realistic literature are meant to represent our society and reality. Growing up and facing personal and societal issues are the main topics.

In a word, the primary distinction between fiction and non-fiction is that fiction is the product of imagination, whereas non-fiction is entirely founded on facts and truth. To better grasp the two genres, let's now get in-depth with them.

While it may be based on a factual tale or circumstance, fiction is literature that was formed from the author's imagination and is not meant to be taken seriously as truth. Novels, short stories, and novellas are examples of literature in the fiction category.

To know more about Fiction visit:

https://brainly.com/question/29587655

#SPJ4

The stone will be moving at a speed of approximately 84.4 meters per second just before it hits the ground, neglecting friction.

This problem can be solved using the laws of kinematics and conservation of energy. The potential energy of the stone at the top of the cliff is converted to kinetic energy as it falls. We can equate the potential energy at the top of the cliff to the kinetic energy just before hitting the ground.

Potential energy = mgh,

Where

Kinetic energy = (1/2)mv^2,

Where

Equating these two expressions and solving for v, we get:

mgh = (1/2)mv^2

v^2 = 2gh

v = sqrt(2gh)

Plugging in the given values, we get:

v = sqrt(2 x 9.8 m/s^2 x 360 m) = 84.4 m/s

Therefore, the stone will be moving at a speed of approximately 84.4 meters per second just before it hits the ground, neglecting friction.

Learn more about laws of kinematics here : brainly.com/question/28863739

#SPJ1

Answer:

0.02 HZ

Explanation:

There is no way to explain it.

Answer:

C.0.02 Hz

Explanation:

In the Roman soldier model for refraction, the first soldier who hits the muddy stream would slow down and turn slightly. Option B is correct.

The Roman soldier model is a simplified model used to explain the behavior of light when it passes from one medium to another. In this model, a group of Roman soldiers is marching across a field towards a muddy stream. The soldiers represent light rays, and the muddy stream represents the boundary between two media with different refractive indices.

When the first soldier hits the muddy stream, they slow down because the speed of light decreases when it passes from a medium with a lower refractive index to a medium with a higher refractive index. Additionally, the soldier turns slightly because the direction of the light ray changes as it passes through the boundary between the two media. This change in direction is called refraction, and it occurs because the speed of light changes when it passes through a medium with a different refractive index.

The amount of refraction that occurs depends on the angle at which the light ray hits the boundary between the two media and the difference in refractive indices between the two media. The Roman soldier model is a useful tool for understanding the basics of refraction, but it has limitations and cannot fully explain all aspects of the phenomenon. Option B is correct.

To know more about the Refraction, here

https://brainly.com/question/16362069

#SPJ1

A student measured the length of a wire four times using a meter rule, then average length will be 18.55 cm

A student measured the length of a wire four times using a meter rule and obtained the following reading 18.6,18.5,18.6,18.5.

To determine the length of the wire, we need to calculate the average of the four measurements.

Wadding up all the readings and dividing by the number of readings.

Average length = (18.6 + 18.5 + 18.6 + 18.5) / 4

Average length = 74.2 / 4

Average length = 18.55 cm

Therefore, the length of the wire is approximately 18.55 cm.

The question is incomplete and the complete question is

'' A student measured the length of a wire four times using a meter rule and obtained the following readings: 18.6 cm; 18.5 cm and 18.6 cm. Determine the length the length the student should record''.

To know more about length here

https://brainly.com/question/29019028

#SPJ1

The activation energy for the diffusion process of Al in Al2O3 is approximately 225,744 J/mol.

To calculate the activation energy for the diffusion process of Al in Al2O3, we can use the Arrhenius equation:

D = D0 * exp(-Q/RT)

where D is the diffusion coefficient, D0 is a constant, Q is the activation energy, R is the gas constant, and T is the absolute temperature.

Taking the natural logarithm of both sides, we get:

ln(D/D0) = -Q/RT

We can then use the given diffusion coefficients and temperatures to obtain two equations:

ln(D1/D0) = -Q/RT1

ln(D2/D0) = -Q/RT2

where D1 and T1 are the diffusion coefficient and temperature at 1000C, and D2 and T2 are the diffusion coefficient and temperature at 1500C.

Taking the ratio of the two equations, we get:

ln(D2/D1) = Q/R * (1/T1 - 1/T2)

Solving for Q, we get:

Q = -R * ln(D2/D1) / (1/T1 - 1/T2)

Plugging in the given values, we get:

Q = -8.314 J/mol-K * ln(2.48 x 10^-14 m^2/s / 7.48 x 10^-23 m^2/s) / (1/1273 K - 1/1773 K)

Q ≈ 225,744 J/mol

Therefore, the activation energy for the diffusion process of Al in Al2O3 is approximately 225,744 J/mol.

For more question on activation energy

https://brainly.com/question/15083463

#SPJ11

An inductance of 0.0191 H (19.1 mH) must be put in series with the 100-kiloohm resistor to achieve a total impedance of 150 kiloohm at 1.0 MHz.

What is Induction?

Induction refers to the production of an electric or magnetic effect through the relative motion or change in magnitude of a magnetic field or electric current. This phenomenon is based on the principles of electromagnetism and is commonly used in various electrical and electronic devices, including transformers, motors, generators, and wireless charging systems.

The total impedance can be calculated using the following formula:

Z_total = sqrt(\(R^{2}\) X_\(L^{2}\))

where R is the resistance (100 kiloohm) and X_L is the inductive reactance. We can rearrange this formula to solve for X_L:

At 1.0 MHz, the angular frequency is:

w = 2πf = 2π × 1.0 × \(10^{6}\) = 6.28 × \(10^{6}\)ad/s

The inductive reactance can be calculated using the following formula:

X_L = wL

where L is the inductance in henries. We can rearrange this formula to solve for L:

L = X_L / w

Now we can substitute the given values and solve for L:

X_L = sqrt((150 ×\(10^{3}\)) - (100 ×\(10^{3}\))) = 120 × \(10^{3}\) ohm

L = X_L / w = 120 × \(10^{3}\) ohm / 6.28 × \(10^{6}\) rad/s = 0.0191 H

Learn more about Induction from the given link

https://brainly.com/question/30049273

#SPJ1

Answer:

5 hours ................

Answer:

B=5 hrs

explanation:

becoz if you add 4 mph/hr

it will graually be 80 in 5 hrs

It only moves forward because there is a net force forward.

Let us note that when an object is acted upon by a system of forces, the object only moves in the direction of the net force.

We have an animal acted upon by the following forces;

The upwards and downwards forces are exactly balanced so the animal neither moves upwards or downwards.

However, the animal does move forward because there is a net force that pushes the animal forward.

Learn more: https://brainly.com/question/13410291

Answer:C. It only moves forward because there is a net force forward.

Explanation: