Answer:
"Man's mind is far too advanced for his survival needs."
See also "Wallace", Darwin's junior partner who couldn't explain the gap in intelligence.
PLEASE HELP ME AND REALLY NEED THIS ANSWER QUIKLY
A student starts a stopwatch when a bob reaches to point M.he counts each time when the bob changes direction and stops the watch on th tenth change in direction . the watch shows a time of 12.0 second . calculate the time period.
please help me with the question!!
Answer:
the time period is 14.00
Explanation:
it.answer help you
how can you reduce output voltage to 6v in transformers if the input voltage is 240v
Answer:
[tex]N_P = 40\ N_S[/tex]
To reduce the output voltage to 6v in transformers if the input voltage is 240v, we need to have 40 times as many turns in the primary coil as there are in the secondary coil.
Explanation:
The change in voltage of a transformer depends upon the turns ratio of the transformer between secondary and primary coil. Following formula can be used to determine the turns ratio in this case:
[tex]\frac{N_P}{N_S} = \frac{V_P}{V_S} \\\\[/tex]
where,
[tex]N_P[/tex] = No. of turns in the primary coil
[tex]N_S[/tex] = No. of turns in the secondary coil
[tex]V_P[/tex] = voltage in the primary coil = 240 V
[tex]V_S[/tex] = voltage in the secondary coil = 6 V
Therefore,
[tex]\frac{N_P}{N_S} = \frac{240\ V}{6\ V} \\\\N_P = 40\ N_S[/tex]
To reduce the output voltage to 6v in transformers if the input voltage is 240v, we need to have 40 times as many turns in the primary coil as there are in the secondary coil.
Pascal in term fundamental unit is?
Answer: SI unit of pressure
Explanation: The pascal (pronounced pass-KAL and abbreviated Pa) is the unit of pressure or stress in the International System of Units (SI). Reduced to base units in SI, one pascal is one kilogram per meter per second squared; that is, 1 Pa = 1 kg · m-1 · s-2.
Hope this helps! Have a fantastic rest of ur day, luv!
What planet has an eleven hundred degree difference from one side to the other.
6. A ball rolled 125 m from the top of a hill to the bottom of a hill. How long
did it take for the ball to roll if the average velocity was 5m/s? *
give reason for the following observation
The smell of hot sizzling food reaches you several metres away but to get the smell from cold food you have to go close.
Answer: The smell of hot sizzling food reaches you several metres away, but to get the smell from cold food you have to go close because the kinetic energy of the particles of matter increases with the increase in temperature. In cold foods, kinetic energy is less while in hot foods, kinetic energy is more
hope this helps
Smell spreads due to diffusion. In hot food the molecules have a lot of kinetic energy , and they therefore spread fast , whereas in cold food the kinetic energy of the molecules are less and they don't spread far.
What is the resistance of a lamp, which draws a current of 3A from a battery whose e.m.f is 12V ?
Explanation:
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Answer:
We have,
current, I = 3 A potential difference,V = 12 V resistance,R = ?then,
Resistance,R = Potential difference,V/ Current,I R= V/I R = 12/3 R = 4 therefore, the required resistance is 4ohms( SI unit of resistance is ohm )
A wave with a frequency of 70.0 Hz travels through rubber with a wavelength of 0.80 m. What is the velocity of the wave?
Explanation:
everything can be found in the picture
A scientist is examining an unknown solid. Which procedure would most likely help determine a chemical property of the substance?
heating it to find the temperature at which it melts
exposing it to a flame to see if it catches on fire
hitting it with a hammer to determine if it breaks or bends
placing it in water to find out whether or not it dissolves
Answer:
hitting it with a hammer to determine if it breaks or bends
Answer:
exposing it to a flame to see if it catches on fire
Explanation:
A chemical property is when the matter changes into a different substance. This is true when you expose it to a flame because if a substance is burned, it will change into a new substance. All the other options are examples of physical changes.
-I also took the quiz and got 100%
Hope this helps!
suggest and explain the modifications that need to be done on the galvanometer to increase its sensitivity.
Answer:
So, sensitivity of the galvanometer can be increased either by increasing the number of turns (N), using strong magnets or increasing the area of the coil (A). So, the correct answer is that the sensitivity of a moving coil galvanometer can be increased by increasing the number of turns of the coil.
which level of the energy pyramid contains the most energy
Answer:
lowest level contains more energy
Explanation:
A 91.5 kg football player running
east at 2.73 m/s tackles a 63.5 kg
player running west at 3.09 m/s.
What is their velocity afterward?
Answer:
I'm pretty sure the velocity is 2.88 m/s
Explanation:
hope this is right good luck
Answer:
0.348
Explanation:
Acellus
2. El edificio Platinum, ubicado en Santiago, se mece con una frecuencia aproximada a 0,10 Hz. ¿Cuál es el periodo de la vibración?
Answer:
10 segundos.
Explanation:
Primero sabemos que la unidad Hz es equivalente a uno sobre segundo, entonces:
1 Hz = 1 s^-1
Lego sabemos que la relación entre frecuencia f y periodo T es:
T = 1/f
Entonces el periodo es la inversa de la frecuencia.
Si en este caso sabemos que la frecuencia es 0.10 Hz, tenemos:
f = 0.10 Hz = 0.10 s^-1
Entonces el periodo sera:
T = 1/f = 1/(0.10 s^-1) = (1/0.10) s = 10 s
Esto significa que una vibración completa le toma 10 segundos.
plz help i have an exam and i dont understand this
A body initially moving at a constant speed is brought to rest at a uniform rate. Which of the speed time graphs below indicate the motion of the body? *
2 points
Answer:
Graph B
Explanation:
Graph B represents the motion of the body as the body moves at a speed first this show the rise in speed. And then it's comes to rest where time is constant the speed drops down and the body comes to rest...
how big is omniverse?
Answer:
big half like whale is so big
make a list of measurement that you used in daily life
A system engine generating 5 hp is raising a load weighting 2000 lb. How high will the load be raised in 10s?
Answer:
h = 44.5 m
Explanation:
Given that,
Power of the engine, P = 5 hP = 3728.5 W
Weight of the load, W = 2000 lb = 8900 kg
We need to find how high the load be raised in 10 s.
We know that,
Power, [tex]P=\dfrac{W}{t}[/tex]
Where
W is work done
Also,
1 Pound = 4.45 newtons earth (N)
[tex]P=\dfrac{F\times h}{t}\\\\h=\dfrac{Pt}{F}\\\\h=\dfrac{8900\times 10}{2000}\\\\h=44.5\ m[/tex]
So, the height raised by the load is 44.5 m.
why does pressure on Diver increases with depth?
Answer: the pressure increases with the amount of water pushing in on all sides of the diver, for example, when you jump into a pool and you head is above water it a little harder to breathe, it is the same way for divers when they are diving at increasingly deep depths, the deeper you are the more water is pressing in on you.
Explanation:
Si un automóvil logra una potencia util promedio de 250kw y se sabe que tiene un rendimiento energético del 25%. ¿Cuanta energia total consume en 1 min? Exprese el resultado en kj
Answer:
W = 3.75 kJ
Explanation:
Power is defined by the relational
P = W / t
W = P t
the yield is 25% = 0.25
W = 0.25 Wo
W = 0.25 250 60
W = 3750 J
W = 3.75 kJ
Which value is equivalent to 178 centimeters?
A.
1.78 millimeters
B.
17.8 millimeters
C.
1.78 meters
D.
1.78 × 10-2 micrometers
E.
1.78 × 10-5 kilometers
Answer: The answer is C.
Explanation: 1 centimeter is equal to 0.01 of a meter and 178 centimeters times 0.01 is 1.78 meters, Hope that helps
I need help pleaseee
Answer:
a refraction
b reflection
creflection
d refraction
brainliest plzz
1. 10. waves break on the beach in 2.0 min. What is the frequency in hertz of these waves (cycles per
second)? What is the time between successive waves, in seconds?
Answer:
there it is fella tried o. ma own consciousness
Find the force due to a current element of length 6cm and flux density of 12 tesla. The current through the element will be 10A.
Answer:
7.2 N
Explanation:
Applying,
F = BIL................. Equation 1
Where F = Force due to current through the element, B = magnetic field, L = Length of the element.
From the question,
Given: B = 12 Tesla, L = 6 cm = 0.06 m, I = 10 A
Substitute these values into equation 1
F = 12(0.06)(10)
F = 7.2 N
Hence the force through the element is 7.2 N
A ball is thrown straight up with a speed of 30 m/s, and air resistance is negligible. How long does it take the ball to reach the maximum height?
Answer:
3 seconds
Explanation:
Applying,
Applying,
v = u±gt................ Equation 1
Where v = final velocity, u = initial velocity, t = time, g = acceleration due to gravity.
From the question,
Given: v = 0 m/s ( at the maximum height), u = 30 m/s
Constant: g = -10 m/s
Substitute these values into equation 1
0 = 30-10t
10t = 30
t = 30/10
t = 3 seconds
Does applying force on a body mean that it has to become faster or
slower?? Explain on the basis of circular motion
Answer:
it means it will become faster because more force are applied. This means that if you get pushed, the harder you are pushed, the faster you'll move (accelerate). The bigger you are, the slower you'll move.
hope this helps bby<3
Select all the correct answers. Which statements about potential energy are true?
Answer: The statement gaining potential energy is always associated with a force field, is true about potential energy.
Explanation:
The energy acquired by an object due to its position is called potential energy.
Basically, a force field exerts a force that gives rise to potential energy of an object. For example, gravity, spring force etc.
This means that gaining potential energy is always associated with a force field.
A change in position does not always means that an object gains potential energy. For example, a spring will have more potential energy when it is compressed or stretched.
Hence, change in position of an object not necessarily means always gain in potential energy.
There are two types of potential energy that is, gravitational potential energy and elastic potential energy.
Thus, we can conclude that the statement gaining potential energy is always associated with a force field, is true about potential energy.
Answer:
Explanation:
The first one and the last one are the correct answer.
A _____ is a model of an atom in which each dot represents a valence electron
Answer:
electron dot diagram is the answer to your question.
a hotgas is injected into at engine at 573 k and exhausts at 343 k. what is the highest efficiency of thisengine?
Answer:
230k
Explanation:
energy capacity maximum is 573 total available. 343k of that energy is present at release and subsequent loss leaving max used energy of 230k.
A large box of mass 4kg slides across a frictionless surface with a velocity of 12m/s to the right. It collides with a smaller box of mass 2kg that is stationary. The boxes stick together. What is the velocity of the two combined masses after the collision.
Answer:
Explanation:
Let's call the large box "1" and the smaller box "2". The equation for this works so that momentum is conserved, as the Law states.
[tex][(m_1v_1+m_2v_2)]_b=[m_1+m_2)v]_a[/tex] That says that the momentum of the larger box plus the momentum of the smaller box before the collision has to equal the momentum of the combined masses since they stick together. Filling in:
[(4(12) + 2(0)] = [(4 + 2)v] and
48 + 0 = 6v so
v = 8 m/s to the right
Complete the statement by filling in the Blanks:
In this experiment, the (Blank) was intentionally manipulated. This was the independent variable. The dependent variable measured was the (Blank).
Options for the Blanks:
- Induced Current
- Magnet Polarity
- Magnet Strength
Answer:
induced current
Explanation:
intentionally manipulated.
Answer:
1. Magnet Polarity 2.Induced Current
Explanation:
Like the guy above said
