The illustration in figure below shows a uniform metre rule weighing 30 N pivoted on a wedge placed under the 40 cm mark and carrying a weight of 70 N hanging 2 from the 10 cm mark. The ruler is balanced horizontally by a weight W hanging from the 100 cm mark. Calculate the value of the weight W.

Answer:

Voltage = 9.6 Volts

Explanation:

Given the following data;

Resistance = 24Ω

Current = 0.4A

To find the voltage of the battery;

Ohm's law states that at constant temperature, the current flowing in an electrical circuit is directly proportional to the voltage applied across the two points and inversely proportional to the resistance in the electrical circuit.

Mathematically, Ohm's law is given by the formula;

[tex] V = current * resistance [/tex]

Substituting into the formula, we have;

Voltage = 0.4 * 24

Voltage = 9.6 Volts

Therefore, the battery voltage must be 9.6 volts

The amswer should be B. reduce the mass

Answer:

Distance = 150 meters.

Explanation:

Given the following data;

Velocity = 15 m/s

Time = 10 seconds

To find the distance;

Velocity can be defined as the rate of change in displacement (distance) with time. Velocity is a vector quantity and as such it has both magnitude and direction.

Mathematically, velocity is given by the equation;

[tex]Velocity = \frac{distance}{time}[/tex]

Making distance the subject of formula, we have;

[tex] Distance = velocity * time [/tex]

[tex] Distance = 15 * 10 [/tex]

Distance = 150 meters

Answer:

A thin wire has more resistance than a thick wire

A short wire has less resistance than a long wire

A warm wire has more resistance than a cool wire

Answer: More, less, more

Explanation:

Edge 2021

Answer:

hi how are you

2) 5/8

4) 5/8

Explanation:

A. True , a base is a substance that forms hydroxide ions in water

hope it helps

Answer:

Aluminum hydrochloric acid

Explanation:

Aluminum reacts with diluted hydrochloric acid at room temperature. The metal aluminium dissolves in hydrochloric acid, producing aluminum chloride and colorless hydrogen gas. The reaction taking place between aluminium and hydrochloric acid is irreversible. And the final products will not react with each other.

Explanation:

Hey Why you wrote my name hn?

Answer:

4/2=2m/s

Explanation:

Answer:

consider rabies injections if the animal is not found

hope it helps

Answer:

I think flush it out with soap and water for a while but for first aid Consider rabies injections

Explanation:

Answer:

6amps

Explanation:

The question is not complete

Given data

voltage= 24volts

Say we have a resistance of 4 ohms

We can then find the current using the formula

V= IR

substitute

24= I*4

I= 24/4

I= 6 amps

Hence the current when the voltage is 24volt and a resistance of 4 ohms is

6amps

Answer:

its lost 91

Explanation:

Answer:

Debido a la información de las neuronas sensoriales al cerebro.

Explicación:

Cuando toco una plancha caliente, extiendo la mano rápidamente porque las neuronas sensoriales presentes en la piel de nuestro cuerpo envían señales al sistema nervioso central, es decir, al cerebro. El cerebro toma decisiones de acuerdo con los estímulos y envía instrucciones a través de las neuronas motoras a los músculos para retirar las manos del hierro caliente a fin de evitar efectos nocivos en la piel debido al calor. El lóbulo frontal es una parte del cerebro que controla la personalidad, la toma de decisiones y el razonamiento.

Answer:

Someone who writes software or programs for computers is called a programmer.

Explanation:

Answer: 1.1·10^5 m/s

Explanation: speed = wavelength · frequency v = λf and

frequency f = 1/T , in which T = period

Speed v= λ/T = 3.2·10^-7 m /2.8·10^-12 s = 114285,7 m/s

Answer:

I think no B

if wrong correct me pls

have a nice day

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Answer: B

Explanation:

Vultures and maggots (baby flies) are common scavengers. Decomposers are organisms that break down the remains of dead animals or plants. ... Green plants are called producers because they take energy from sunlight and produce food in which the energy is stored.

Answer:

Artificial silk or art silk is any synthetic fiber which resembles silk, but typically costs less to produce.

Explanation:

Answer:

Artificial silk or art silk is any synthetic fiber which resembles silk, but typically costs less to produce. Frequently, "artificial silk" is just a synonym for rayon. When made out of bamboo viscose it is also sometimes called bamboo silk.

Answer:

Explanation:

Given

Power (p)= 726 watt

Time (t) = 14 sec

distance travelled (d; h) = 36 m

mass (m) = ?

we know

Power (p) = W/t  ( w = work done )

p = m * g * h / t  ( w = m * g* h)

726 = m * 10 * 36 / 14 ( g = 10 m/s^2)

m = 28. 23 kg

or if we use the value of g as 9.8 m/s^2

the mass will be

= 28.8 kg

hope it helps :)

The mass of the object if it takes 726 watts of power to move an object 36 m in 14 s is 28.8 kg.

An object's inertia, a fundamental property, is measured by its mass, a fundamental indicator of the volume of substance inside the thing. Definitions of mass can seem circular since it is such a fundamental quantity and is challenging to define in terms of another.

It is possible to define every mechanical quantity in terms of mass, length, and time. The SI unit for mass, denoted by the letter m, is the kilogram. While mass is typically thought of as an immutable feature of an item, relativistic mass must be taken into account when traveling at speeds close to the speed of light.

Given:

The Power, p = 726 watt

The Time, t = 14 sec

distance travelled, d = 36 m

Calculate the power by the given formula

p = W / t  

p = m * g * h / t  ( w = m * g* h)

726 = m * 9.8 * 36 / 14 ( g = 10 m/s^2)

m = 28. 8 kg

Therefore,  the mass of the object If it takes 726 watts of power to move an object 36 m in 14 s is 28.8 kg.

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Answer:

for resistors in series, add the resistances to get their equivalence. The answer is

80.0 Ohms

Answer:

I think it is C

Explanation:

If the temperature of a gas increases, the gas particles have a higher average speed as they gain kinetic energy. They collide more frequently with the walls of the container, which produces a bigger pressure.

The reason why motors are designed so that the polarity of the electromagnet constantly flips.is

C. so the electromagnet will continuously turn

The reason motors are designed so that the polarity of the electromagnet constantly flips is to continuously turn the electromagnet. This allows the motor to rotate continuously, rather than becoming stuck in one position.

The flipping of the polarity causes the electromagnet to attract and repel from the permanent magnets, creating a rotating motion.

Therefore, the correct answer is C.

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Answer:

mass

Explanation:

mass is used in measuring weight. for example kg, tonnes

Answer: At any time, the number of decays per reasonable

time unit is proportional to the amount of the isotope present. (This is expressed by the first-order rate equation for a one-decay process.) Therefore, it does not matter whether one looks at the amount or the number of decays. It may be easier to measure the number of decays by e.g. a Geiger counter and prefer it for that reason.

It now matters what you understand to be the rate: the number of decays per second or the percentage of nuclei decaying at any given time. The first becomes less over time, the second one is a constant for each isotope.

You must have a reasonable number of decays within your time unit. If the half-life is long, it makes little sense to look at millisecond slices.

Answer:

a] 3000hz

b]3.33 × 10⁻⁴

ci]300

ii] 3000

iii]60,000

Explanation:

If a wave is travelling at 3000 m/s and has a wavelength of 1 meter the frequency of the wave would be 3000 Hz and the time period of the wave would be 3.33×10⁻⁴ seconds.

It can be defined as the number of cycles completed per second. It is represented in hertz and inversely proportional to the wavelength.

Frequency = 1/T

As given in the problem If a wave is travelling at 3000 m/s and has a wavelength of 1 meter,

The frequency of the wave would be 3000 Hz.

The time period of the wave would be 3.33×10⁻⁴ seconds.

There would be 3000 complete wave cycles in 1 second, 300 wave cycles in 10 seconds, and 50 wave cycles in 1 minute.

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Answer:

accurate it means trying to find accurate or exact value. or tends to find exact value,

Explanation:

Answer:

it does not mirror the image

Answer:

the output rating that should the pump motor have is 83.30 Watt

Explanation:

Given that

The pump lift 20 kg of water per minute having a height of 25.50 m

We need to find out the output rating that should the pump motor have

As we know that

power = energy ÷  time

=  m g h ÷ t  

=   20.0 × 9.8 × 25.50 ÷ 60  

=  83.30 Watts

Hence, the output rating that should the pump motor have is 83.30 Watt