If the car speeds up at a steady 1. 3 m/s2 , how long after starting is the magnitude of its centripetal acceleration equal to the tangential acceleration?.

Answer:

With a pressure, for instance, of 4 atmospheres, and a volume of 5 liters yields 4 x 5 = 20. Divide the result by the number of moles of gas. If, for instance, the gas contains 2 moles of molecules: 20 / 2 = 10. Divide the result by the gas constant, which is 0.08206 L atm/mol K: 10 / 0.08206 = 121.86.

Answer:

A) Availability

Explanation:

Right on Edge 2021

Answer:

Availability

Explanation:

edge

According to problem -

mass= 10 kg;

velocity(v)= 2 m/s;

time(t)= 0.1 sec

Now we can give force(F) by

where a= acceleration

Now using force formula

F= ma= 30×20= 600 Newton

Therefore the girl will experience a force of 600 N.

Answer:

It takes 0.25 hours or 15 minutes

Explanation:

You have to divide the distance by the velocity to find the time:

10/40 = 0.25 hours = 15 minutes

The  three words or phrases used by the cartoonist to identify objects or people within the cartoon are:

The message (idea) of the cartoon is to show how the employs are maltreating and underpaying their slaves or their employees/workers and the purpose is for them to see and change.

The  picture relates to America today as it talks about racism in America and its effect on African America.

Therefore, The  three words or phrases used by the cartoonist to identify objects or people within the cartoon are:

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When a ferromagnetic material is placed in an electromagnetic coil and a magnetic field is applied, the magnetic induction (B) is increased.

Therefore, the correct answer is:

(a) There is a large increase in the magnetic induction (B)

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Answer:

B

Explanation:

This question involves the concepts of tension force, centripetal force, and time period.

The tension force in the string is "0.88 N".

We will find the angular speed of the ball:

\(\omega = \frac{2\pi}{T}\)

where,

ω = angualar speed = ?

T = time period = 0.9 s

\(\omega = \frac{2\pi}{0.9\ s}\)

ω = 6.98 rad/s

We will find the linear speed of the ball:

v = rω

whre,

v = linear speed = ?

r = radius of circular path = length of string = 0.3 m

Therefore,

v = (0.3 m)(6.98 rad/s)

v = 2.09 m/s

We will find the tension force in the string:

In order for the ball to stay on the circular path the tension force in the string must be equal to the centripetal force:

\(Tension = Centripetal\ Force\\\\ T = \frac{mv^2}{r}=\frac{(0.06\ kg)(2.09\ m/s)^2}{0.3\ m}\)

T = 0.88 N

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Answer:

Explanation:

acceleration is rate of change of velocity

a=dv/dt =d/dt(4t^2+t) = 8t+1

Acceleration t=2 sec, =8(2)+1=17 m/s^2

Force = mass * acceleration = 5*17 = 85N

Newton's Law of Gravity states that every point mass in the universe attracts every other point mass with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

The law applies to all bodies having mass anywhere in the universe, which means that it is the same everywhere, for all time. The gravitational force is proportional to the product of the two masses, and the constant of proportionality is known as G. Its value sets the "size" or "strength" of gravitational force.

G is determined by precise experimental measurements because it cannot be calculated from first principles, nor do we know its value otherwise. Newton's law of gravity may not apply very close to very large masses, such as black holes, where General Relativity takes over as a better description.

The law of gravity works in the entire universe and not just near the Earth. Hence, the statement "This law of gravity only works near Earth. In space far from Earth there is no gravity" is false.

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The amount of current that the good battery alone can drive through the starter motor depends on the specific battery and starter motor used, but it is typically around 100-200 amps. Therefore, the current passes through the dead battery in the opposite direction of its normal operation.

The dead battery alone is not able to drive any current through the starter motor because its internal resistance is too high.
With the jumper cables attached, the current passing through the starter motor is the sum of the current provided by both batteries. Assuming both batteries are fully charged and in good condition, the total current could be up to 400 amps or more.
With the jumper cables attached, the dead battery will receive some of the current from the good battery, but the amount depends on the resistance of the dead battery. Assuming the resistance is not too high, the dead battery could receive up to several hundred amps of current.
With the jumper cables attached, current flows from the good battery through the jumper cables, through the dead battery, and then back through the other jumper cable to the starter motor.

1. How much current could the good battery alone drive through the starter motor?
Assuming the good battery has a voltage of 12 V, and the starter motor has a resistance (R_motor), you can use Ohm's Law to find the current:
I = V / R_motor
where I is the current, V is the voltage, and R_motor is the resistance of the starter motor.
2. How much current is the dead battery alone able to drive through the starter motor?
Since the dead battery has a high internal resistance (R_dead_battery) due to chemical reactions, its voltage drops, and it cannot provide sufficient current. We can still use Ohm's Law to calculate the current:
I = V / (R_motor + R_dead_battery)
3. With the jumper cables attached, how much current passes through the starter motor?
When the jumper cables connect the good battery to the dead battery and the starter motor, the total resistance in the circuit is reduced. Let's assume the good battery's internal resistance is R_good_battery, and the resistance of the jumper cables is negligible. Now, the equivalent resistance is given by:
R_eq = (R_good_battery * R_dead_battery) / (R_good_battery + R_dead_battery)
So, the current through the starter motor with jumper cables is:
I = V / (R_motor + R_eq)
4. With the jumper cables attached, how much current passes through the dead battery?
The current passing through the dead battery can be found using Kirchhoff's Current Law, which states that the sum of currents entering a junction equals the sum of currents leaving the junction. Since the dead battery is connected in parallel with the good battery, the current passing through the dead battery is the same as the current passing through the good battery.
5. With the jumper cables attached, in which direction current passes through the dead battery?
Since the good battery is providing current to start the engine and charge the dead battery, the current will flow from the good battery to the dead battery, in the direction opposite to the current flow when the dead battery was functioning normally.
Remember to express all current values in Amperes (A) as the appropriate units.

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The answer to the given question is option C: 40.4°F. Let's see the explanation below.How to find the temperature difference across a properly operating electric furnace?

]We know that the temperature difference across a properly operating electric furnace is given by:ΔT = (Q / (1.08 * CFM))where,Q is the rate of heat input in BTU/hr,1.08 is the factor to convert CFM to lb/min,and CFM is the rate of air flow in cubic feet per minute.So, here,ΔT = (Q / (1.08 * CFM))

Given,The rate of heat input = 10 kW = 34,120 BTU/hrThe rate of air flow = 900 CFMPlugging these values in the above equation, we get:ΔT = (34,120 / (1.08 × 900))ΔT = 40.4°FTherefore, the temperature difference across a properly operating electric furnace that is using a 10-kW electric heater and is moving 900 cfm of air is 40.4°F. Hence, the main answer is option C.

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The temperature difference across the electric furnace is approximately 30.2°F (option A).

To calculate the temperature difference across the electric furnace, we can use the formula:

Temperature difference (ΔT) = Heat (Q) / (Airflow rate * Specific heat capacity * Density)

First, let's convert the power of the electric heater from kilowatts (kW) to watts (W):

10 kW = 10,000 W

Next, we need to determine the specific heat capacity of air. Typically, it is around 0.24 BTU/lb°F.

Since the given airflow rate is in cubic feet per minute (cfm), we need to convert it to pounds per minute (lb/min) using the density of air. The density of air at standard conditions is approximately 0.075 lb/ft³.

Converting 900 cfm to lb/min:

900 cfm * 0.075 lb/ft³ = 67.5 lb/min

Now we can substitute the values into the formula:

ΔT = 10,000 W / (67.5 lb/min * 0.24 BTU/lb°F * 0.075 lb/ft³)

Simplifying the equation:

ΔT = 10,000 W / (67.5 * 0.24 * 0.075) (lb/min * BTU/lb°F * lb/ft³)

Calculating the result:

ΔT ≈ 30.2°F

Therefore, the temperature difference across the electric furnace is approximately 30.2°F, which corresponds to option A.

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The amount of current that leaves the battery will decrease when light bulb E is unscrewed and removed from the circuit. Based on the available information, we cannot determine whether bulb A gets brighter, dimmer, or stays the same brightness.

The reason is that there is not enough information about the circuit or the behavior of other bulbs in the circuit.

However, we are given a hint that the brightness of a light bulb is related to the square of the current that passes through it and the resistance of the bulb. This means that if the current passing through bulb A increases, its brightness will increase as well, and if the current passing through bulb A decreases, its brightness will decrease.

For part B, when light bulb E is unscrewed and removed from the circuit, the total resistance of the circuit will increase since there is now one less bulb for the current to flow through. According to Ohm's law, the current passing through the circuit is directly proportional to the voltage and inversely proportional to the resistance.

Since the voltage of the battery remains constant, the current passing through the circuit will decrease when the resistance of the circuit increases. Therefore, the amount of current that leaves the battery will decrease when light bulb E is unscrewed and removed from the circuit.

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Answer:12.5

Explanation: Subtract

Answer:

A. Two strands of nucleotides bonded together at their bases,

twisting to form a double helix

Explanation:

Hope this helps! Can I have brainliest?

Answer:

The total current in the circuit is the current that travels thru a single conductor that connects to the parallel circuit (current from a electromotive source, etc.)

I = I1 + I2 + I3 ...... In

If n items are in parallel with another, then I is the total current passing thru these items

C. you are cooler than your surroundings. So if you are cooler than your surroundings, wearing lighter-colored clothes will help to keep you warmer.

This is because lighter-colored clothes reflect more sunlight and therefore retain more of the heat from your body. Darker-colored clothes absorb more sunlight and therefore lose more of the heat from your body, which can make you feel colder. So if you are cooler than your surroundings, wearing lighter-colored clothes will help to keep you warmer. The other options are not necessarily true as they do not take into account the relationship between body temperature and the surrounding environment. However, in winter, you want to retain as much heat as possible, and darker colors are better at absorbing and retaining heat. So if you are cooler than your surroundings, wearing dark-colored clothes will keep you warmer than light-colored clothes.

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Answer:

111dB

Explanation:

First, find the intensity of the sound using the formula I = Power / 4 x pi x radius ^2

So

60.0 / (4 x 3.14 (6.25)^2)

= 0.122

Then plug that into the equation to find sound level, which is 10log( I / Io)

Io being (1 x 10^-12)

So

10log(0.122 / 1 x 10^-12)

= 111dB

Hope this helps :)

Answer:

gravitational potantional energy

Explanation:

ill try to link a source!

edit: https://flexbooks.ck12.org/cbook/ck-12-middle-school-physical-science-flexbook-2.0/section/14.3/primary/lesson/potential-energy-ms-ps#:~:text=Potential%20energy%20due%20to%20the,is%20called%20gravitational%20potential%20energy.

The wavelength of the second line in the Balmer series is 304 nm and fourth line is 1093.7 nm.

The Balmer series in the hydrogen spectrum has spectral lines that are in the visible spectrum.

The wavelength is determined using the Balmer-Rydberg equation.

Wavelength for any two selected lines from the Balmer series of the spectra of hydrogen,

1 / λ = R (1/ n₁² - 1/ n₂²)

Where,

λ is the wavelength,

R is the Rydberg constant (1.0974 x 10⁷ m⁻¹),

n₁ and n₂ are integers where n₂ > n₁.

First, let us choose n₁ = 2, which is the second energy level and we will calculate the wavelength of the second line.

n₂ = 3λ = R(1/2² - 1/3²)

λ = R (4/36 - 1/9)

λ = R (1/36) = (1.0974 x 10⁷ m⁻¹) / 36

λ = 3.04 x 10⁻⁷ m = 304 nm

The wavelength of the second line in the Balmer series is 304 nm.

Now, we will calculate the wavelength of the fourth line.

n₂ = 5n₁ = 2λ = R (1/2² - 1/5²)

λ = R (4/100 - 1/25)

λ = R (3/100) = (1.0974 x 10⁷ m⁻¹) / 100 x 3

λ = 1.0937 x 10⁻⁷ m = 1093.7 nm

The wavelength of the fourth line in the Balmer series is 1093.7 nm.

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A spiral spring of natural length 30cm and force constant of 30N/m is compressed to 20cm. The energy stored in the spring​ is 0.005 Joules.

To calculate the energy stored in a compressed spring, we can use the formula:

Potential Energy (U) = (1/2) * k *\(x^2\)

k is the force constant of the spring (N/m)

x is the compression or extension of the spring (m)

Given:

Natural length (L0) = 30 cm = 0.3 m

Force constant (k) = 30 N/m

Compression (x) = 20 cm = 0.2 m

First, let's calculate the change in length (ΔL) of the spring due to compression:

ΔL = L0 - x

ΔL = 0.3 m - 0.2 m

ΔL = 0.1 m

Now, we can calculate the potential energy stored in the spring:

U = (1/2) * k * ΔL^2

U = (1/2) * 30 N/m * (0.1 \(m)^2\)

U = (1/2) * 30 N/m * 0.01 \(m^2\)

U = 0.5 N/m * 0.01 \(m^2\)

U = 0.005 J

Therefore, the energy stored in the spring when it is compressed to 20 cm is 0.005 Joules.

The potential energy stored in a spring is directly proportional to the square of the displacement or compression. The force constant (k) of the spring determines its stiffness, and the greater the force constant, the more energy the spring can store for a given compression or extension. In this case, the spring has a force constant of 30 N/m, and when it is compressed by 0.1 m, it stores 0.005 J of potential energy.

It's important to note that the potential energy stored in the spring is potential mechanical energy, which can be converted back into kinetic energy when the spring is released. The energy stored in springs is widely used in various applications, such as in mechanical systems, elastic materials, and devices that require energy storage and release.

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Answer:

4000J

Explanation:

m=50, g=10m/s², h= 8.0m

the formula is mgh

50*10*8

=4000J

An iron nail is drawn to the magnet's north pole and adheres to it. The iron nail becomes a conduit for the magnetic field lines. As a result, the side that becomes attached to the North Pole serves as the South Pole.

Is an iron nail more drawn to a magnet's north or south pole?

A magnet's strength is greatest close to its poles. Therefore, the magnet's two poles will attract the greatest amount of nails.

An iron nail is more attracted to which pole of a magnet?

Iron nails are magnetically inducted to acquire the opposite polarity when they are brought close to one end of a magnet. Since opposing poles are drawn to one another,

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Answer: There is two event that needs to be made: 1. blue eyes, and 2. brown eyes. A spinner is made with a circle. A full circle has 360 degrees and it would be divided based on the probability of the event.

Blue eyes have 25% chance, so the angle of the spinner would be 25%*360°= 90°

Brown eyes have 75% chance, so the angle of the spinner would be 25%*360°= 270°

So, the 90° of the circle would be written as 1(blue eyes) and 270° of the circle will be written as 2(brown eyes).

Explanation: u welcome

Answer: I have no clue

Explanation: I don’t know

Answer:

Sorry if I kwon the

answer I telling u

the answer sorry

Carriers that are designed to carry heavy loads often have many wheels. Carriers that are intended to transport massive loads are required to have several wheels. When a heavy load is placed on a vehicle's tires, it can cause the tires to wear out quickly.

As a result, additional wheels are added to distribute the weight of the load more evenly across the wheels and tires. This distributes the load more evenly, reducing tire wear and improving stability. The additional wheels also assist in the vehicle's braking ability and help to prevent the vehicle from tipping over when carrying a heavy load.Below are some examples of carriers that carry heavy loads and have multiple wheels:

1. Tanker trucks: They transport fuel, gas, and other liquids.2. Flatbed trucks: These are utilized to transport various items such as wood, steel, and other construction materials.3. Dump trucks: They are used to transport waste materials, dirt, and sand to construction sites.4. Trailers: They transport heavy equipment, machines, and other large items that cannot fit in other vehicles.5. Cranes: These are utilized to carry large loads to tall buildings and other locations.

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Answer:

Possiable answer by edge:

The shape of a river’s stream bed affects the speed and eroding power of a river by influencing the amount of friction between the water flowing through the river and the stream bed below. Friction is the force that opposes the motion of one surface as it moves across another surface. In a river, there is friction between the flowing water and the stream bed beneath it. Where a river is deep, less water comes into contact with the stream bed, so there is less friction. The reduced friction means there is less opposition to the water’s motion, so the river flows at a greater speed and has more kinetic energy for erosion. On the other hand, where a river is shallow, more water comes into contact with the stream bed, so there is more friction. The increased friction means there is more opposition to the water’s motion, so the river flows at a lesser speed and has less kinetic energy for erosion. Also, the roughness of a stream bed covered with boulders and other obstacles causes the water to flow through the river in a turbulent fashion. This could cause the river to move slower in some cases or erode more in other cases.

Explanation:

summary of answer:

influencing the amount of friction between the water flowing through the river and the stream bed below.

Answer:

Concept: Physical Constants

The difference between Length and Time is: Length is a measure of distance while Time is a quantity or measure of period.

Length can defined as a fundamental quantity that describe the total space occupied by an object from end to end or the distance of an object from end to end.

Time can be defined the duration of an occurrence in space. Time is so important as it helps us adequately know the period of an event or occurrence.

In conclusion, The difference between Length and Time is: Length is a measure of distance while Time is a quantity or measure of period.

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