Answer:
only if you take copper
Explanation:
Any electric current has an associated magnetic field, so a current-carrying conductor is an electromagnet, regardless of what material it is made. ... However, using copper alone will not make a strong electromagnet
an ocean wave has a wavelength of 15 meters and is moving at 2.5 m/s. what is the frequency
Answer:
frequency is .167/s for this wave
Answer:
wave speed=frequency×wave length
frequency=15/2.5
=6
i hope this helps
Two football players with mass 70 kg and 90 kg run directly toward each other with speeds of - 6 m/s and +3 m/s respectively. If they grab each other as they collide, what will be the combined speed of the two players just after the collision?
Answer:
they will fall down
Explanation:
Define a vector in a sentence.
Answer:
A vector in physics is a quantity that has both magnitude and direction.
Answer:
a line that usually veers and can be the result of force. Examples of Vector in a sentence. Military aviators study the vector between their aircraft and the enemy in order to calculate how to intercept.
Explanation:
A 1 kg water bottle have 0.15m above your head How much GPE does it have
Answer:
GPE = 1.47 Joules.
Explanation:
Given the following data;
Mass = 1kg
Height = 0.15m
We know that acceleration due to gravity is equal to 9.8m/s²
To find the gravitational potential energy;
Gravitational potential energy (GPE) is an energy possessed by an object or body due to its position above the earth.
Mathematically, gravitational potential energy is given by the formula;
[tex] G.P.E = mgh[/tex]
Where;
G.P.E represents potential energy measured in Joules.
m represents the mass of an object.
g represents acceleration due to gravity measured in meters per seconds square.
h represents the height measured in meters.
Substituting into the formula, we have;
GPE = 1*9.8*0.15
GPE = 1.47 Joules.
a 2.00x10^2 -g sample of water at 60 C is heated yo water vapor at 140 C. How much thermal energy is absorbed
Answer:
The thermal energy absorbed is 66.98 kJ.
Explanation:
The thermal energy absorbed can be found by using the following equation:
[tex] Q = mC\Delta T [/tex]
Where:
Q: is the thermal energy =?
m: is the mass of water = 2.00x10² g
ΔT = T₂ - T₁ = 140 °C - 60 °C = 80 °C
C: is the specific heat of water = 4.186 J/(°C*g)
Hence, the thermal energy absorbed is:
[tex]Q = mC\Delta T = 2.00 \cdot 10^{2} g*4.186 \frac{J}{^{\circ} C*g}*80 ^{\circ} C = 66976 J = 66.98 kJ[/tex]
Therefore, the thermal energy absorbed is 66.98 kJ.
I hope it helps you!
The thermal energy absorbed will be 66.98 kJ.heat loss is inverse to heat gain.
What are heat gain and heat loss?Heat gain is defined as the amount of heat required to increase the temperature of a substance by some degree of Celcius.
Given data;
Q(thermal energy) =?
m(mass of water) = 2.00x10² g
C(specific heat of water) = 4.186 J/(°C*g)
ΔT = T₂ - T₁
ΔT = 140 °C - 60 °C
ΔT = 80 °C
It is given by the formula as ;
[tex]\rm Q= mcdt \\\\ Q= 2.00x10^2 \times 4.186 \times 80 \\\\ Q=66.98 \ kJ.[/tex]
Hence, the thermal energy absorbed will be 66.98 kJ.
To learn more about the heat gain refer to the link;
https://brainly.com/question/26268921
#SPJ5
A simple pendulum makes 540 complete oscillations in a minute, so its frequency is ........... HZ
A-3
B-6
C-9
D-12
Answer:
a
Explanation:
time=540×60
=32400
f=1÷t
=1÷32400
f=3.09
f=3
The frequency is 3 Hz.
To calculate the frequency of the pendulum, the values given are
t = 540 minute
What is frequency of simple pendulum?The frequency of the simple pendulum can be described through the pendulum moves and come back to its own position for the specific period of the time. Also the pendulum frequency depends upon its length and mass.
Thus, frequency formula can be,
ω = √g/l
T = 2π / ω
Frequency, f = 1 / T = ω / 2π
As we have to find the frequency, the time period will be reciprocal.
f = 1/ T Hz.
t = 540 per minute
= 540 × 60 seconds
= 32400 seconds
f = 1 / 32400
= 3.08 × 10 ⁻⁶
f = 3 Hz
The frequency thus calculated as 3Hz.
Hence, Option A is the correct answer.
Learn more about the simple pendulum frequency,
https://brainly.com/question/12495919
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force prevents things from floating above the ground. *
frictional
muscular
gravitational
If my angular velocity slows from 30 Hz to 20 Hz in 72°, what is my deceleration?
Answer:
The deceleration is -7.85x10³ rad/s².
Explanation:
The angular speed (ω) is related to frequency (f) as follows:
[tex] \omega = 2\pi f [/tex]
When the frequency is 30 Hz the angular speed is:
[tex] \omega_{i} = 2\pi f = 2\pi*30 Hz = 188.5 rad/s [/tex]
Now, when the frequency is 20 Hz the angular speed is:
[tex] \omega_{f} = 2\pi*20 Hz = 125.7 rad/s [/tex]
Finally, the angular acceleration (α) can be found using the following equation:
[tex] \omega_{f}^{2} = \omega_{i}^{2} + 2\theta \alpha [/tex]
Where:
θ: is the angular displacement = 72°
[tex] \alpha = \frac{\omega_{f}^{2} - \omega_{i}^{2}}{2\theta} [/tex]
[tex] \alpha = \frac{(125.7 rad/s)^{2} - (188.5 rad/s)^{2}}{2*72*\frac{2\pi rad}{360}} = -7.85 \cdot 10^{3} rad/s^{2} [/tex]
Therefore, the deceleration is -7.85x10³ rad/s².
I hope it helps you!
H E L P A S A P P P P P P P P P !
Answer:
Higher Amplitude = Higher Energy.
Explanation:
As you could see the higher number the amplitude is the energy also gets higher!
The NGC 3603 region of space is shown below. It is a
cloud of gas and dust. Stars are forming in this cloud,
How would NGC 3603 be classified?
O A. As a galaxy
O B. As a nebula
O C. As a planet
D. As a solar system
Answer:
A. NGC 3603 would be classified as Nebula
Explanation:
30 points, brainiest, high school physics problem, please help with explanations.
Answer:
I think the answer is C too
Why does it take a long time for a train to come to a complete stop?
Answer:
Trains stop in their own time.
Every freight train, every situation, every load is different. The distance it takes to halt a train in an emergency is based on multiple factors: the speed when the brakes are applied, the track's incline, the number of cars hooked behind the locomotives and the loading of those cars, the "brake delay" inherent in the train's hydraulic system, the friction-causing metallurgy of the wheels and tracks, the weather.
Even the engineer behind the controls can't know on any given day how long it would take to stop the train.
"There is no specific rule of thumb on that," said Greg Udolph, general manager of the Texas State Railroad, a freight and tourist line in East Texas running from Palestine to Rusk. "If the track is wet with dew it changes. Everything that can affect it does. A train takes as long to stop as it takes to stop. Sometimes it can be a mile. Sometimes it's less, sometime's it's more."
Explanation:
Hope this helps :)
What property of the wave is labeled F?
amplitude
crest
trough
wavelength
PLWASE HELP ILL DO ANYTHING
A stone at rest is dropped from a cliff, and the stone hits the ground after a time of 3 s. What is the stone's velocity when it hits the ground? O
2.94 m/s
3.3 m/s
323 m/s
29.4 m/s
Answer:
The stone is accelerating at 9.8 m/s². If we multiply that by three seconds, we get 29.4 m/s.
please try a and c, electric circuits please try
Explanation:
I love you
mujhe bhi bolo
Hi guys! pls help I asked this question almost 2 times and still didn't receive my answers.....Thanks in advance..
Answer:
1. Lateral inversion is a phenomenon in which left appears to be right and vice versa. It is due to direction that light follows when it strikes a reflecting surface, generally a mirror.
These are the letters which don't show lateral inversion A,H,O,T,U
2. USES OF CONCAVE MIRROR
They are used as shaving mirrors to see a larger image of the face.
Dentists use concave mirrors to view large images of the teeth of the patients.
USES OF CONVEX MIRROR
It is is used as a rear view mirror in vehicles.
It is used as a vigilance mirror.
Brainliest if right.
Someone fires a 0.04 kg bullet at a block of wood that has a mass of 0.5 kg. (The block of wood is sitting on a frictionless surface, so it moves freely when the bullet hits it). The wood block is initially at rest. The bullet is traveling 300 m/s when it hits the wood block and sticks inside it. Now the bullet and the wood block move together as one object. How fast are they traveling?
Answer:
Explanation:
Remark
This is a conservation problem.
The momentum before impact = momentum after impact
momentum before
m = 0.04 kg
v = 300 m/s
momentum after
m = 0.5 kg + 0.04kg That's the mass of the block and bullet
v = ?
Solution
0.04 * 300 = 0.54 * x
12 kg m/s = 0.54 kg * x
12 / 0.54 = x
x = 22.22 m/s
what would be the velocity of a sound wave in the air with a frequency of 260Hz?
The speed of sound in air doesn't depend on the frequency of the sound. It depends on the temperature, pressure, and humidity of the air. It's usually around 340 m/s .
On her trips from home to school, karla drives along the streets after exiting the driveway. She drives 1.85 miles south, 2.43 miles east and 0.35 miles north. determine the magnitude of karla's resultant displacment.
PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer this correctly!!!! (60pts)
Answer:
Daniel Bernoulli
Explanation:
Hope this helps! :)
Answer:
Daniel Bernoulli is the person who discovered that fast-moving fluids produce less pressure and slow-moving fluids produce greater pressure.
What information is needed to calculate the speed of a falling object?
A. Height that it was dropped from
B. All of these are needed to calculate the velocity
C. Volume of the object
D. Mass of the object
a wave has wavelength of 20m and a speed of 450m/s. what is the frequency of the wave
Answer:
22.5/s is the frequency of the wave
Given:
Wavelength, λ = 20 mSpeed of light, C = 450 m/sWe know,
→ [tex]Frequency (f) = \frac{C}{\lambda}[/tex]
By substituting the values,
[tex]= \frac{450}{20}[/tex]
[tex]= 22.5 \ Hz[/tex]
Thus the approach above is right.
Learn more about frequency here:
https://brainly.com/question/25601011
A runner starts a race at rest and reaches her top speed of 8.6m/s in 19.0s. What is the average acceleration?
Answer:
Average acceleration = 0.45 m/s²
Explanation:
Given the following data;
Initial velocity, u = 0m/s
Final velocity, v = 8.6 m/s
Time, t= 19 seconds
To find the average acceleration;
In physics, acceleration can be defined as the rate of change of the velocity of an object with respect to time.
This simply means that, acceleration is given by the subtraction of final speed from the initial speed all over time.
Mathematically, acceleration is given by the formula;
[tex]Acceleration = \frac{initial speed - final speed}{time}[/tex]
Substituting into the formula, we have;
Acceleration = (8.6 - 0)/19
Acceleration = 8.6/19
Average acceleration = 0.45 m/s²
when the wavelength is tripled at a constant frequency, what happens to the velocity of the wave?
a. it is tripled
b. it remains the same
c. it decreases to half the original value
d. it increases to six times the original value
Answer:
increases over time is the correct answer
Explanation:
Just need to confirm an answer
A ball of mass 0.2 kg is kicked straight up from ground level. Ignoring air resistance, its gravitational potential energy as it reaches its maximum
height is 10 J. The initial speed with which the ball was kicked is most nearly
(A) 20 m/s (B) 10 m/s (C) 5 m/s (D) 1 m/s
Answer:
B
Explanation:
Remark
If, when it reaches its maximum height where the PE is the greatest, that the maximum energy is when the ball is first kicked. That would mean its starting energy is 10 Joules.
Formula
KE = 1/2 m v^2
Givens
KE = 10 J
m = 0.2 kg
v = ?
Solution
10 = 1/2 * 0.2 * v^2
10 * 2 = 0.2 * v^2
20 = 0.2 * v^2
20/0.2 = v^2
100 = v^2
v = 10 m/s
HELP PLSSSSSSSSSS ASAP :)))))
Answer:
Explanation:
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But Pooh, you know I'm really shiesty
You told all them O.T. ni ggas that you really slide
Tell the truth about your gang, they really dyin'
I got my own fire, don't need security in the club
All that woofin' on the net , I thought you was a thug
They ain't got nowhere to go, I sh0t up everywhere they was
Yeah, you know who took that - from you
Come get it back in blood
Come get it back in blood
How do airplanes stay in air?
Answer:
A plane's engines are designed to move it forward at high speed. That makes air flow rapidly over the wings, which throw the air down toward the ground, generating an upward force called lift that overcomes the plane's weight and holds it in the sky. The wings force the air downward and that pushes the plane upward.
Explanation:
planes stay in air because of 2 reasons :
Power of thier enginesAerodynamicsPlane's wings are designed to push the air downwards and letting the plane to lift off and stay in air..
Need help with these 2 questions ??????!!!!! Hurry this is due soon
Answer: The first one is A and C
Explanation:
Answer:
2 is A
3 is C
Explanation:
The reason why two is a is think of it like this. atoms have to be combined together to make a molecule. So in other words you need letters to create a word.
3 is c because in a recipe you have to have the right proportions. Just like you have to have the right proportions of atoms to create a molecule.
Help someone :(((((((((((((((
Wave Speed (M/s) = Frequency (Hz) x Wavelength (M)
Wave Speed = 3500Hz x 2.8M = 9800M/s
Answer = Top one
Answer:
A
Explanation:
3500Hz*2.5m=9800m/s
Give Brillienst please!!!!
It is common problem to a physically active person who is experiencing dizziness, fatigue, dark-colored urine, and extreme thirst.
Answer:
Look below.
Explanation:
All the symptoms provided points to the common problem of dehydration. Especially a physically active person because they are constantly sweating which leads to the loss of bodily fluids and dehydration.