In order to find the components of a vector, you should:.

The kinetic energy of the car is 300,000J

Kinetic energy is the energy of motion.

The formula for kinetic energy is given as \(K.E = \frac{1}{2} mv^{2}\)

where m = mass of object , v = speed of object.

An object having some speed and mass will have kinetic energy while an object at rest will not have any kinetic energy since the speed of object at rest is zero.

Since at rest speed is zero, an object has kinetic energy only when it is in motion.

From the question,

m = 1,500kg

v = 20m/s

K.E = (1/2) x 1,500 x 20 x 20

K. E = 300,000J

The car now possess a kinetic energy of 300,000J

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Answer:

55.6m

Explanation:

basically you can add to get you reasonable answer but you start with your biggest number

A Gardner crosses the plant with red and white flowers. Each is pure of its traits. If the gene of the flower shows incomplete dominance the dominant flow gene will show the color.

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Answer: V' = 1.514m/s

Explanation: Given the Impulse-Momentum Theorum, this is a description of an INELASTIC Collision. When you hug, you stick, making it inelastic.


Formula: m1xV1+m2xV2= pTotal, or total momentum

m1=60kg

V1=1.5m/s

m2=45kg

V2=2.2m/s

so (60)(1.5)+(45)(2.2)=159 kgm/s

To find the Resultant velocity of the lover(s) - plural (signalling inelastic)

you would take the sum of the m1+m2, which is 105kg-> then create the equation 159/105, which is the total momentum divided by the total mass, which would equate to the resultant velocity of an inelastic collision.

Hope this helped.

The displacement of Sue would be zero if her home is the origin.

This is because displacement is the change in the position of an object from its origin. To calculate displacement, you have to know the difference in distance of an object from its origin point to its final position. In short, the formula is as follows:

  s = x1 - x2 = Δx

If Sue's home is the origin, then her displacement would be the difference between her final position (home) and her initial position (home), which is zero. Therefore, Sue's displacement is zero.

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Answer:

v₂ = 48 mph

Explanation:

We know that,

Speed = distance/time

A German Shepherd takes 4 hours to cover a distance, if it travels at a speed of 36mph.

We need to find the speed to cover the same distance in 3 hours.

\(\dfrac{v_1}{v_2}=\dfrac{t_2}{t_1}\\\\v_2=\dfrac{v_1t_1}{t_2}\\\\v_2=\dfrac{36\times 4}{3}\\\\v_2=48\ mph\)

So, the new speed is 48 mph.

Answer:

1. Solid- rock, shoe

2. Liquid- water, dish soap

3. Gas- oxygen, carbon dioxide

4. Plasma- lightning, stars

A simple way to measure your fluid balance is to look at the color of your urine. If your urine is dark and has a strong odor, you are definitely dehydrated and need to increase your water intake. If your urine is completely clear, you probably drank too much.

It usually takes about two hours for the body to fully rehydrate after drinking a significant amount of water. Water is best because you need to stay hydrated. Sports drinks like Gatorade can help athletes who need to replenish their electrolytes.

Research shows that milk is one of the best drinks for hydration better than water and sports drinks. Researchers attribute its effectiveness to milk's natural electrolytes carbohydrates and proteins. can take as little as 5-15 minutes. However, if you are dehydrated with an empty bladder it can take up to 8-9 hours before you need to urinate.

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Answer:

You have to divide your real measurement to the model. For example, if your real measurement is 5m and your model is 20cm, divide 5/20 =1/4 and that means the ratio would be 1:4.

Explanation:

Firstly, we can write the equation for the electric force. It is:

By applying our values we get

Now, if we remind ourselves of Newton's law, we know that

We know the mass, and we know the Force, so we can find out the acceleration, this gives us:

Thus

Our final acceleration is 0.122 m/s^2

Answer:

oooh thats hard

Explanation:

well i would probaly search the page number or anthing on the page that   should help

A sudden rise in radio background noise might indicate that there is an increase in the amount of electromagnetic interference (EMI) around the area.

Electromagnetic interference (EMI) is the disturbance that affects an electrical circuit due to either electromagnetic induction or electromagnetic radiation emitted from an external source. A sudden rise in radio background noise might also indicate that there is an increase in radiofrequency interference, which is a common type of EMI.

This interference could be caused by a variety of factors, including electronic devices, power lines, or other sources of radio waves. It can be difficult to identify the source of the interference, but it is important to try to do so in order to prevent damage to electronic devices and ensure that radio signals are not disrupted.

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Answer:

The direction of a centripetal force is toward the center of rotation, the same as for centripetal acceleration. According to Newton's second law of motion, a net force causes the acceleration of mass according to Fnet = ma.

Explanation:

I am sorry if it is wrong

The formula of a vector equation is r(t) = r0 + tv, where r(t) is the position vector at time t, r0 is the initial position vector, v is the velocity vector, and t is the time. This equation describes the motion of an object in terms of its initial position, velocity, and time

A vector equation is a mathematical equation that involves vectors and vector operations. It is used to describe the position, velocity, or acceleration of an object in space. A vector equation is typically written in the form of a vector sum, such as:

  r = a + b

where r is the resultant vector, and a and b are the component vectors. Each component vector can be represented by its magnitude and direction, or by its components in a given coordinate system. Vector equations are commonly used in physics, engineering, and other fields that deal with motion and forces.

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Answer:

Yes

Explanation:

Displacement is equal to the final position of X minus the initial position of X.

An infrared thermometer does not have to touch the surface of food to check the temperature accurately.

Infrared thermometers, can be called laser thermometers, work by measuring the infrared radiation emitted by an object.

Since they don't need to make direct contact with the food, they can provide a temperature reading without potentially contaminating the food.

Whilee Infrared thermometers are often used to measure the temperature of food, but they can also be used to measure the temperature of other objects, such as people, animals, and the environment.

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A bacteria (10^15 kg) weighs ten times as much as an ordinary cell (10^2 kg for a hummingbird and 10^12 cells for a bacterium). A essential quality of a body is its mass.

It was widely believed to be connected to the volume of matter in a physical body before to the atom's discovery and the development of particle physics. The mass of a unit cell is calculated as the product of the masses of each atom and the quantity of atoms in the unit cell. Mast cells are so-called because they can release protein-antibodies.

(Hummingbird Mass/Cell Mass) = 10^-2/10^-14 = 10^12 cells is the formula for estimating the number of cells.

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The complete question is -

Assuming the mass of an average cell is ten times the mass of a bacterium (which is 10⁻¹⁵ kg):Calculate the number of cells in a hummingbird, assuming it weighs 10⁻² kg.

Answer:

2.205 pounds

Explanation:

5.5 kg is 2.205 lbs. hope this helps!

Since the electric field between the plates is constant, If the two plates are brought closer together, the potential difference between the two plates decreases

The relation between potential difference and the electric field is given by

ΔV = E.d

Since the electric field is maintained constant, the potential difference is directly inversely proportional to the distance between the plates.

The potential difference between the plates will therefore likewise decrease if the distance between the plates is reduced, we will state in this case.

The energy required to move a unit charge, or one coulomb, from one point to the other in a circuit is measured as the potential difference between the two points. Potential difference is measured in volts or joules per coulomb.

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Ohm's Law describes the relationship between voltage and current in a resistor, and Kirchhoff's rules controls the currents entering and leaving a circuit node.

A source, a switch, a load, and a conductor make up a straightforward electrical circuit. These components' responsibilities are; electric current is supplied from a cell as a source and the load is a resistor and there is a "path" made of conductive materials like wire or printed etchings on a circuit board.

Ohm's Law, which describes the relationship between voltage and current in a resistor (V=IR), and Kirchhoff's Current and Voltage Laws, which control the currents entering and leaving a circuit node and the sum of voltages around a circuit loop, respectively, can be used to determine the circuit equations.

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Answer:

Coal, crude oil, and natural gas are all considered fossil fuels all considered fossil fuels because they were formed from the fossilized, buried remains of plants and animals that lived millions of years ago.

Explanation:

Coal, crude oil, and natural gas are all considered fossil fuels because they were formed from the fossilized, buried remains of plants and animals that lived millions of years ago. A fossil fuel is a natural fuel such as coal or gas, formed in the geological past from the remains of living organisms.

Answer:corrosion (i believe)

Explanation:

Answer

Mix baking soda and salt with hot water and cover everything with it. The proportions are not crucial, but about 1 tablespoon of salt and 1 tablespoon of baking soda to 3 dl water should do the trick. Lightly tarnished objects should clean up in a few minutes, and you just rinse them of and dry them.

Explanation:

The magnitude of the average velocity of chickadee flight is 2.5 m/s

Average velocity is defined as the rate of change of displacement with respect to time. Mathematically, we can write -

v = Δx/Δt

Given is a chickadee who flies 30 m to the West for 6 seconds and then 40 m to the North for 14 seconds.

Now, the displeacement of the chickadee, can be calculated as follows -

|Δx|² = (30)² + (40)²

|Δx|² = 900 + 1600

|Δx|² = 2500

|Δx| = \(\sqrt{2500}\)

|Δx| = 50

Now, the average velocity of the chickadee will be -

v = |Δx|/Δt

v = 50/(6 + 14)

v = 50/20

v = 2.5 m/s

Therefore, the magnitude of the average velocity of chickadee flight is 2.5 m/s

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Answer:

B

Explanation:

LDRs (light-dependent resistors) are used in automatic surveillance lights to sense light levels. Their resistance diminishes as the intensity of the light rises.

Light dependent resistors, also known as LDRs or photoresistors, are electronic components that are frequently used in electronic circuit designs to sense the existence or amount of light.

LDRs are distinct from other types of resistors such as carbon film resistors, metal oxide film resistors, metal film resistors, and others that are commonly used in other electrical systems. They are specially made for their light sensitivity and the resulting shift in resistance.

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Answer:

Cold temps. . .

Explanation:

Hope it helps!

One career that  believe benefits greatly from a degree in Psychology is Human Resources (HR). HR professionals are responsible for managing employee relations, recruiting, training, and ensuring compliance with labor laws and company policies.

A degree in Psychology can provide HR professionals with a deeper understanding of human behavior and the ability to better manage workplace dynamics.

Firstly, a degree in Psychology can help HR professionals understand and navigate the complexities of human behavior. HR professionals often deal with sensitive issues such as workplace conflict, discrimination, and harassment. A strong foundation in psychology can help HR professionals better understand the motivations and behaviors of employees, allowing them to handle these situations with greater sensitivity and compassion.

Secondly, psychology can help HR professionals develop effective communication and leadership skills. HR professionals are often responsible for training employees, providing feedback, and managing performance. A degree in Psychology can provide HR professionals with a deeper understanding of communication patterns and techniques, allowing them to better convey information to employees and resolve conflicts.

Lastly, a degree in Psychology can help HR professionals develop critical thinking and problem-solving skills. HR professionals often face complex issues that require careful analysis and creative solutions. Psychology provides a strong foundation in research methods, statistics, and analytical thinking, which can help HR professionals make informed decisions and develop effective policies.

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Answer:

Specific heat capacity, = 1.43 J/g°C

Explanation:

Given the following data;

Mass = 10 g

Change in temperature = 140°C

Quantity of heat = 2000 J

To find the specific heat capacity;

Heat capacity is given by the formula;

\( Q = mcdt\)

Where;

Making c the subject of formula, we have;

\( c = \frac {Q}{mdt} \)

Substituting into the equation, we have;

\( c = \frac {2000}{10*140} \)

\( c = \frac {2000}{1400} \)

Specific heat capacity, = 1.43 J/g°C