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3 years ago

11

How far can a person run in 0.25hr if he or she runs at a average speed of 16km/he?

1 answer:

Gala2k [10]3 years ago

3 0

Answer:

4km

Explanation:

d = st

d=0.25*16

d=4km

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In which direction is the magnetic force acting in the charge?

Luda [366]

Answer:

"Right Hand

Right Hand Rule: Magnetic fields exert forces on moving charges. This force is one of the most basic known. The direction of the magnetic force on a moving charge is perpendicular to the plane formed by v and B and follows right hand rule–1 (RHR-1) "

Explanation:

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Por un solenoide de 6500 espiras y 25 cm de longitud circula una corriente de 0,6 amperios. ¿Cuál es el valor del campo magnétic

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Answer:

Magnetic field, B = 0.0196 T

Explanation:

A current of 0.6 amps flows through a solenoid 6500 turns and 25 cm long. What is the value of the magnetic field inside it?

We have,

Current, I = 0.6 A

Number of turns in the solenoid, N = 6500

Length of solenoid, l = 25 cm = 0.25 m

The magnetic field inside the solenoid is given by :

$B=\mu_o\dfrac{N}{l}I\\\\B=\dfrac{4\pi \times 10^{-7}\times 6500\times 0.6}{0.25}\\\\B=0.0196\ T$

So, the value of the magnetic field inside the solenoid is 0.0196 T.

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4 years ago

A woman is standing in the ocean, and she notices that after a wave crest passes by, five more crests pass in a time of 50.2 s.

lorasvet [3.4K]

Explanation:

(a) The period of a wave is the time required for one complete cycle. In this case, we have the time of five cycles. So:

$T=\frac{t}{n}\\\\T=\frac{50.2s}{5}\\T=10.04s$

(b) The frequency of a wave is inversely proportional to its period:

$f=\frac{1}{T}\\f=\frac{1}{10.04s}\\f=0.01Hz$

(c) The wavelength is the distance between two successive crests, so:

$\lambda=30.2m$

(d) The speed of a wave is defined as:

$v=f\lambda\\v=(0.1Hz)(30.2m)\\v=3.02\frac{m}{s}$

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3 years ago

Three bulbs are connected by tubing, and the tubing is evacuated. The volume of the tubing is 45.0 mL. The first bulb has a volu

kipiarov [429]

Answer:

The final pressure of the whole system is 34.80 atm.

Explanation:

Given that,

Volume = 45.0 ml

Volume of first bulb = 77.0 mL

Pressure = 8.89 atm

Volume of second bulb = 250 mL

Pressure = 2.82 atm

Volume of third bulb = 21.0 mL

Pressure = 8.42 atm

We need to calculate the final pressure of the whole system

Using formula of pressure

$P_{1}V_{1}+P_{2}V_{2}+P_{3}V_{3}+P_{t}V_{t}=P_{f}V_{f}$

Where, $P_{1}$ = pressure of first bulb

$P_{2}$ = pressure of second bulb

$P_{3}$ = pressure of third bulb

$P_{4}$ = initial pressure of tube

$V_{1}$ = Volume of first bulb

$V_{2}$ =Volume of second bulb

$V_{3}$ = Volume of third bulb

$V_{4}$ = Initial volume of tube

Put the value into the formula

$8.89\times77.0+250\times2.82+21.0\times8.42+0=P_{f}\times45$

$P_{f}=\dfrac{1566.35}{45}$

$P_{f}=34.80\ atm$

Hence, The final pressure of the whole system is 34.80 atm.

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3 years ago

A tape diagram. 0 dollars is 0 percent. Question mark dollars is 23 percent. 52 dollars is 100 percent. Jared has earned 23% of

Jobisdone [24]

17.15 :)

rigt on ur mom

*death

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