Answer:
तिकडी एकच
Explanation:
आप सल क्ल वल दन रव दंचंबी एक गम ok plz
A laptop computer adapter has a voltage of 19 v it has a resistance of 4.0 Ω and the adapter gets warm when operating. So determine the current going through the adapter
Answer:
Current, I = 4.75 Amps
Explanation:
Given the following data;
Voltage = 19 V
Resistance = 4 Ohms
To find the current;
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 = IR[/tex]
Where;
V represents voltage measured in voltage.
I represents current measured in amperes.
R represents resistance measured in ohms.
Making current (I) the subject of formula, we have;
[tex] I = \frac {V}{R} [/tex]
Substituting into the formula, we have;
[tex] I = \frac {19}{4} [/tex]
Current, I = 4.75 Amps
This is the question
please help asap
I am not sure of this, but it is either the third option or the last option.
An automatic switch that opens when the current reaches a set value is called:
a. surge suppressor
C. circuit breaker
b. relay
d. fuse
Please select the best answer from the choices provided
Un neumático sin cámara, soporta una presión de 1.5 atm cuando la temperatura ambiente es de 300°K. ¿Qué presión llegará a soportar dicho neumático si, en el transcurso de un viaje, las ruedas alcanzan una temperatura de 67ºC? Atm
Answer:
El neumático soportará una presión de 1.7 atm.
Explanation:
Podemos encontrar la presión final del neumático usando la ecuación del gas ideal:
[tex] PV = nRT [/tex]
En donde:
P: es la presión
V: es el volumen
n: es el número de moles del gas
R: es la constante de gases ideales
T: es la temperatura
Cuando el neumático soporta la presión inicial tenemos:
P₁ = 1.5 atm
T₁ = 300 K
[tex] V_{1} = \frac{nRT_{1}}{P_{1}} [/tex] (1)
La presión cuando T = 67 °C es:
[tex] P_{2} = \frac{nRT_{2}}{V_{2}} [/tex] (2)
Dado que V₁ = V₂ (el volumen del neumático no cambia), al introducir la ecuación (1) en la ecuación (2) podemos encontrar la presión final:
[tex] P_{2} = \frac{nRT_{2}}{V_{2}} = \frac{nRT_{2}}{\frac{nRT_{1}}{P_{1}}} = \frac{P_{1}T_{2}}{T_{1}} = \frac{1.5 atm*(67 + 273)K}{300 K} = 1.7 atm [/tex]
Por lo tanto, si en el transcurso de un viaje las ruedas alcanzan una temperatura de 67 ºC, el neumático soportará una presión de 1.7 atm.
Espero que te sea de utilidad!
A 50.0 g golf ball is struck by a driver whose head has a mass of 500.0 kg. The final speed of the golf ball after leaving the tee is 45.0 m/s. Find the final momentum of the golf ball.
A)2.5 kg·m/s
B)5.0 kg·m/s
C)7.5 kg·m/s
D)10.0 kg·m/s
this is my answer sure po ako n tama iyan
Multiple Choice
Which of the following is not an example of malicious code?
A Trojan horse
B worm
C virus
D. spy gear
Answer:
D
Explanation:
Spy gear is different from Spyware.
-
J SLC
2SCC
A football player throws a football with a force of 50 N. The ball travels 12 min 3 seconds and
hits a water bucket with a force of 25 N. This causes the bucket to moves a distance of 4
meters in just 2 seconds
Answer:
DO NOT DOWNLOAD THAT LINK, IT WILL SCAM YOU!
Explanation:
Explanation:
hola si me puede dar la respuesta
What is the speed of a wave with a frequency of 100 hz and a wave length of .5 m?
Answer:
Explanation:
There are 2 ways to help with this. Explain the details, which are fairly simple in this topic, or give the formula. My hope is that an explanation will last longer than memorizing the formula. I give you both.
If a wave has frequency, f, of 3 Hz, its period, T, is
1
3
s
. The wavelength,
λ
, is 5 meters. That means that in the time of one period, the wave travels 5 m.
In general,
S
p
e
e
d
=
distance
time
In applying this general definition of speed
↑
to a wave, we have
speed of the wave
=
wavelength
period
Note: we generally use v for speed of a wave. Using the variable names, then that last formula is written
v
=
λ
T
Since
T
=
1
f
, we can also say that
v
=
λ
⋅
f
So, using that last formula
v
=
5
m
⋅
3
H
z
=
15
m
s
Note: the unit Hz is equivalent to what it was called 100 years ago,
cycles
second
(
also cps
)
. Cycles is not a true unit, so the Hz contributed only the "per second" to the result
15
m
s
.
Answer: the speed is =30ms^-1 The speed of a wave is given by "speed" (ms^-1)= "frequency(Hz)" xx "wavelength (m)" The frequency is f=100Hz The wavelength is lambda=0.3m The speed is v=lambdaf=0.3*100=30ms^-1
Explanation:
A record player has a velocity of 33.33 RPM. How fast is the record spinning in m/s at a distance of 0.085 m from the center?
Answer:
0.297 m/s
Explanation:
It is 0.297 m/s. The study of rotational motion in the absence of forces is known as angular kinematics.
What is angular velocity?The angular velocity of an object is the rate at which it rotates or revolves around an axis in time. The Greek letter omega (, sometimes ) represents angular velocity. The SI unit of angular velocity is radians per second because it is measured in angle per unit time. Angular velocity (w) is a vector quantity in uniform circular motion and equals angular displacement (, a vector quantity) divided by time change (t). The arc length travelled (S) divided by the change in time (t) equals speed, which is also equal to |w|R. An example of angular velocity is a roulette ball on a roulette wheel, a race car on a circular path, and a Ferris wheel.To learn more about Angular Kinematics refer to:
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A freight train is traveling 150 km east to the nearest lumber yard. It took the train 3 hours to arrive. At what velocity is the train traveling
Answer:
2 • – 4
Explanation:
BUUUUUUUUU
Which of the following mass-spring sys
Case A: A spring with a k=300 N/m and a mass of 200 g suspended from it.
Case B: A spring with a k=400 N/m and a mass of 200 g suspended from it.
Explain your answer
Where do human get the stuff they need to survive?
Answer:
Humans survive through gaining nutrients by eating
Answer:
We must have food, water, air, and shelter to survive. If any one of these basic needs is not met, then humans cannot survive. Oxygen is one of the most essential human needs. Our bodies need a consistent supply of it to function properly. Without access to oxygen, you can experience a condition known as cerebral hypoxia, which affects the brain. As little as five minutes without air can result in brain damage. We get food from plants and animals, we get water from rivers and streams, and we get shelter from building anything that is around.
Explanation:
VAMDNVABNATNAMDTEMCYSPLDDNHNMQTYY
que es bandaaa
Please help
asappppppp
Answer:
16.2m/s
Explanation:
Kinetic energy=1/2mass*speed squared
KE=1/2mv^2
Data,
KE=85J
M=0.65kg
V=?
85J=1/2(0.65kg)V^2
Cross multiply
2 *85=0.65V^2
Divide both sides by 0.65
170/0.65=v^2
V=✓(170/0.65)
V= 16.172m/s
First option is collect
factors effecting time period of shm
Answer:
In fact, the mass m and the force constant k are the only factors that affect the period and frequency of simple harmonic motion.
1
Why would you advice a person to sit rather than stand in a moving bus?
Answer:
Standing in a moving bus may lead the person fall when the driver will apply brake.
Explanation:
According to Newton's third law of motion, there is an equal and opposite reaction to every action. When the bus is moving, the person standing is in the state of rest. The moment the driver applies brake, the bus stops. The stopping of the bus makes the person in the stationary position change in motion. Because of this force, the person may fall and collide if he is standing instead of sitting in the moving bus.
A spring stretches 2 cm when a 10 N weight hangs on it. How far will it stretch with a weight of 20 N ?
Answer:
4cm
Explanation:
If it's a simple ratio 2cm:10N to ?cm:20N, It should be 4cm:20N.
Would you expect to weigh more on an ocean beach or on top of a mountain? Explain.
Answer:
An Ocean beach
Explanation:
a Ocean beach is far heavier than the top of a mountain, despite that a mountain is made with many heavy rocks a Ocean beach may have light sand but the layers of sand and the width would be way heavier then the top of a mountain.
Figure one, voltmeters
Answer:
(i) Half
(ii) 3 V
(iii) V₁
Explanation:
(i) The given parameters are;
The circuits have identical resistances
The number of resistors in circuit 1 = 1 resistor
The number of resistors in circuit 2 = 2 resistors
Let 'R' represent the value of each resistor, we have;
The total resistance of circuit 1 = R Ohm
The total resistance of circuit 3 = 2·R Ohm
∴ The total resistance of circuit 1 = (1/2) × The total resistance of circuit 3
∴ The resistance of circuit 1 is half the resistance of circuit 3
(ii) The potential difference of each cell, V = 1.5 volts
The number of cells in circuit 2 = 2 cells
The total potential difference of the cells of circuit 2 = 2 × 1.5 volts = 3 × volts = 3 V.
The voltmeter reading = The potential difference across the cell or cells it is applied
∴ The voltmeter reading on voltmeter, V₂, applied across the cells of circuit 2 = 3 V
(iii) The voltmeter reading V₁ = 1.5 V
The voltmeter reading V₂ = 3 V
The voltmeter reading V₃ = 4.5/(2·R) × R = 2.25 V
Therefore, the voltmeter reading with the smallest volt, is V₁ = 1.5 V
For the love of God please help me before my mom gets angry about my horrible grades
A 170.0 g sample of a substance is heated to 120.0 °C and then plunged into 200.0 mL of water at 10.0 °C. The resulting mixture has a temperature of 12.6 °C. What is the specific heat capacity of the substance?
I'LL GIVE BRAINLIEST!!!!
Answer:
Heat Lost = (120 - 12.6) deg * 170 g * S = `18260 gm-deg * S
Heat Gained = (12.6 - 10) deg * 200 gm* 1 cal/ gm-deg - 520 cal
S = 520 / 18260 cal / gm-deg = .0285 cal / gm-deg
Since Heat Lost = Heat Gained
A 10 kg sled is sitting on top of a 10 m hill what is the potential energy of the sled
Answer:
Explanation:
potential energy=mass*height*gravity
=10*10*9.8
=100*9.8
980 joule
What is the best description of the destructive interference of light?
A. The crest of one wave overlaps with the trough of another.
B. The crests of two waves intersect.
C. A longitudinal wave meets a transverse light wave.
D. A mechanical wave meets an electromagnetic wave.
Answer: The crest of one wave overlaps with the trough of another
Explanation:
I took the test and got 100%. This is the correct answer
The best description of the destructive interference of light is the crest of one wave overlaps with the trough of another.
What is destructive interference of light?Destructive interference takes place when waves come together in such a manner that they completely cancel each other out or amplitude of the resulting wave decreased.
What is crest and trough?The highest surface part of a wave is called the crest, and the lowest part is the trough.
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A 0.10 kg mass is oscillating on Planet X at a small angle from a light string of length 0.20 m with a period of
0.63 s.
What is the acceleration of gravity on Planet X?
Answer:
the acceleration of gravity on Planet X is 19.89 m/s^2
Explanation:
The computation of the acceleration of gravity on Planet X is shown below:
T = 2π√l ÷ √g
g = l ÷ (T÷ 2π)^2
= 4π^2l ÷ T^2
= 4π^2× 0.2 ÷ 0.63^2
= 19.89 m/s^2
Hence, the acceleration of gravity on Planet X is 19.89 m/s^2
In this way it should be calculated
The same would be relevant and cosnidered
Why is the sum of forces/net force less than the applied force? Think about the direction of the forces in your answer
Answer:
he same direction the magnitude of the resultant is equal to the scalar sum of the magnitude of the forces, but if they are applied in different directions the magnitude must be found using the Pythagorean theorem
Explanation:
When there are several applied forces, if they are all in the same direction the magnitude of the resultant is equal to the scalar sum of the magnitude of the forces, but if they are applied in different directions the magnitude must be found using the Pythagorean theorem, so which the resulting dowry is less than the sum of the magnitudes.
Let's carry out an example with two forces, F1 and F2 of equal magnitudes
if they are in the same direction
F_total = F₁ + F₂ = 2 F
if they are at 90º
F_total = [tex]\sqrt{F_1^2 + F_2^2}= \sqrt{2} \ F[/tex]
if they are at 180º
F_total = F₁ -F₂ = 0
A state of being conscious, or aware, of something is called ________________.
Group of answer choices
A. activation
B. mindfulness
C. persistence
D. motivation
Answer:
B or D
Explanation:
A 55 kg box rests on a horizontal surface. The coefficient of kinetic friction between the box and the surface is 0.30. If the box is pulled at constant velocity over the horizontal surface with horizontal applied force, what is the magnitude of the force of friction and the force applied?
Answer: [tex]161.7\ N[/tex]
Explanation:
Given
Mass of the box is [tex]m=55\ kg[/tex]
Coefficient of kinetic friction [tex]\mu_k=0.3[/tex]
Kinetic friction comes into play when the body is moving
Here, kinetic friction opposes the applied force
kinetic friction is [tex]\mu_kmg[/tex]
thus, the applied force is
[tex]F=\mu_kmg\\F=0.3\times 55\times 9.8\\F=161.7\ N[/tex]
An air track car with a mass of 6 kg and velocity of 4 m/s to the right collides with a 3 kg car moving to the left with a velocity of 2 m/s. After the collision, the 6kg car continues forward with a velocity of 1 m/s. What is the new velocity of the 3 kg car after the collision?
Remember that moment before collision is equal to the moment after collision.
[tex](m1 \times u1) + (m2 \times u2) = (m1 \times v1) + (m2 \times u2)[/tex]
Plugging in our values,
[tex](6 \times 4) - (3 \times 2) = (6 \times 1) + (3 \times v2) \\ 24 - 6 = 6 \times 3v2 \\ 18 = 18v2 \\ v2 = 1 {ms}^{ - 1} [/tex]
The velocity of the second car after the collision is 8 m/s.
What is law of conservation of momentum ?The law of conservation of momentum states that, within the domain, the total momentum before collision is equal to the momentum after collision.
Here,
Mass of the car to the right, m₁ = 6 kg
Mass of the car to the left, m₂ = 3 kg
Velocity of the first car before collision, u₁ = 4 m/s
Velocity of the second car before collision, u₂ = 2 m/s
Velocity of the first car after collision, v₁ = 1 m/s
According to the conservation of momentum,
(m₁u₁) + (m₂u₂) = (m₁v₁) + (m₂v₂)
(6x4) + (3x2) = (6x1) + (3v₂)
3v₂ = 24
Therefore, v₂ = 24/3
v₂ = 8 m/s
Hence,
The velocity of the second car after the collision is 8 m/s.
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If a ball is thrown straight up with an initial velocity of 20 m/s upward, what is the maximum height it will reach?
Extremely large main sequence stars consume their fuel quickly and burn hot and bright. As they consume all their hydrogen, they become supergiants. Describe the changes that take place, in terms of luminosity and temperature, to these large main sequence stars as they exhaust their hydrogen supplies.
Answer: Their temperature decreases dramatically, but their luminosity increases only slightly.
Explanation: Edmentum answer
During a lab investigation, students added four 50 g masses to two boxes and arranged the boxes so that they were motionless on a pulley, as shown in the diagram. The students then followed the procedure described in the box. The students recorded their observations after
each procedure and reset the pulley system to the original conditions.
During which procedures did students observe an unbalanced upward force on Box 1?
Group of answer choices
Procedures 4 and 5
Procedures 3 and 4
Procedures 1, 2, and 3
Procedures 1, 3, and 5
Answer:
Procedures 4 and 5.
Explanation:
Both would cause the box to move up.
4, it becomes lighter
5, the other becomes heavier, pulling it down, causing box one to go up
Since we seek the action of force to push up box 1, the students observes an unbalanced upward force on Box 1 in procedures 4 and procedure 5.
In what procedures did students observe an unbalanced upward force on Box 1?Generally, In procedure 4 we added another mass to the box two, therefore, causing box one to experience an upward force.
Therefore, students observe an unbalanced upward force on Box 1 in procedure 4.
Procedure 5 we remove masses from box 1 resulting in box 2 becoming heavier, pulling it down.
Therefore, students observe an unbalanced upward force on Box 1 in procedure 5.
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