Answer:
HYDROGENExplanation:
how do you hook an ammeter and a voltmeter in a circuit?
Answer:
ammeter goes in series and a voltmeter goes in parallel
Explanation:
What is the momentum of an object with a mass of 50 kg travelling at 8 m/s?
Please answer ASAP
We know that,
p = mv
Where p is momentum,m is mass & v is velocity.From ques. we have;
mass = 50 kgVelocity = 8 m/sSo,
p = 50 × 8
p = 400 kg m/s
p = mv
Clearly, now just put the values
p = 50 × 8
p = 400 kg m/s
Why does earth not float away from the sun?
Answer:
Because the sun's gravity holds it in its orbit
what is the length of the X component of the vector plotted below
Answer:
5
Explanation:
If you straighten out the line, it touches the 5, which makes the length 5
Expand(Find the cube of):(x+y)³
( x + y )³
x³ + y³ + 3x²y + 3xy²
(or)
x³ + y³ + 3xy (x+y)
What is capacitive reactance and how to find it??
Answer:
Capacitivie reactance is the angular frequency
Explanation:
hope this helps
have a great day/night
An astronaut is said to be weightless when he/she travels in a satellite. Does it mean that the earth does not attract him/her
First of all, what a weight is? weight is m × g.. and when a person is in space then the force of gravity isn't acting on him or her, so yeah it will not have weight, but remember gravity is a very very low, now if a body has more mass, more gravity will act on it right? just imagine the mass of a person and that of earth.. now yes, earth will do exert a force on the astronaut but is negiligable.
Along a horizontal snow-covered track, a sled, of mass m = 105 kg, slides by the action of a horizontal force of 230 N. The coefficient of friction between the sled and the snow is µ = 0.025.
Answer:
Explanation:
The only thing I can figure you need here is the accleration of the sled. The equation we need to find this is Newton's Second Law that says that sum of the forces acting on an object is equal to the object's mass times its acceleration. For us, that looks like this because of the friction working against the sled:
F - f = ma but of course it's much more involved than that simple equation! We have the F value as 230 N, and we have the mass as 105, but we do not have the frictional force, f, and we need it to solve for a in the above equation. We know that
f = μ[tex]F_n[/tex] where μ is the coefficient of friction, and [tex]F_n[/tex] is the normal force, aka weight of the object. We will use the coefficient of friction and find the weight in order to fill in for f:
[tex]F_n=mg[/tex] so
[tex]F_n=(105)(9.8)[/tex] so the weight of the sled is
[tex]F_n=[/tex] 1.0 × 10³ with the correct number of sig dig there. Now to find f:
f = (.025)(1.0 × 10³) so
f = 25 to the correct number of sig fig. Now on to our "real" equation:
F - f = ma and
230 - 25 = 105a. We have to do the subtraction first, round, and then divide since the rules for addition and subtraction are different from the rules for dividing and multiplying.
230 - 25 will round to the tens place giving us 210. Then
210 = 105a. 210 has 2 sig figs in it while 105 has 3, so we will divide and round to 2 sig fig:
a = 2.0 m/sec²
- What will be the field strength from a 1.25* 10^-3 when measured 0.4m from the charge?
Answer:
Explanation:
I'm assuming your charge is in Coulombs so I will proceed that way. The formula for this electric field problem is
[tex]E=\frac{kQ}{r^2}[/tex] where k = 9.0 × 10⁹. Filling in:
[tex]E=\frac{(9.0*10^9)(1.25*10^{-3})}{.4^2}[/tex] gives us an electric field value of
7.0 × 10⁷ N/C
Which of the following are in the correct order from smallest to largest?
A.Millimeter, meter, centimeter, kilometer
B.Meter, millimeter, centimeter, kilometer
C.Millimeter, centimeter, meter, kilometer
D.Centimeter, millimeter, meter, kilometer
Answer:
Millimeter, Centimeter, meter, kilometer
Explanation:
K H D M D C M
This is what I say to remember them
Kick Him Down Mommy Don't Commit Murder
Anwser this Question , i will Brainelist .
Answer:
D option
Explanation:
What will be the ME of a machine that produces a 240 N work with a 300
N work input?
Given:
Solution:
Answer:
Answer:
Efficiency = 80%
Explanation:
Given the following data;
Work output = 240 N
Work Input = 300 N
To find the mechanical efficiency of a machine;
[tex] Efficiency = \frac {Out-put \; work}{In-put \; work} * 100 [/tex]
Substituting into the equation, we have;
[tex] Efficiency = \frac {240}{300} * 100 [/tex]
[tex] Efficiency = 0.8 * 100 [/tex]
Efficiency = 80%
Therefore, the mechanical efficiency of the machine is 80 percent.
NEED ASAP
WILL GIVE YOU 100 BRAINLY
The far point of a nearsighted person is 100 cm. What power glasses must they use to correct this problem and be able to see signs while driving?
Answer:
I need help with this
Explanation:
PLEASE HELP
again this is about volleyball
Scenario: What happens when a player over-runs first base in a straight line and then is tug
with the ball?
• the player is ejected from the game
• nothing, they are allowed to do that
• the player is out
• the player gets to bat again
Tenemos un Cable de cobre de 1 km de longitud cuya sección es de 2 milímetros al cuadrado y queremos saber la resistencia que señalara el ohmetro , su temperatura es de 20°
Answer:
8.5 Ω
Explanation:
La resistencia de un material es directamente proporcional a su longitud e inversamente proporcional al área de la sección transversal.
La fórmula de la resistencia (R) viene dada por:
R = ρL/A
Donde ρ es la resistividad del material, L es la longitud del material y A es el área de la sección transversal del material.
Dado que:
L = 1 km = 1000 m, A = 2 mm² = 2 * 10⁻⁶ m², ρ (cobre) = 1.7 * 10⁻⁸ Ωm
Sustituyendo da:
R = 1,7 * 10⁻⁸ * 1000/2 * 10⁻⁶
R = 8.5 Ω
What is mean by biodiversity???
Answer:
Biodiversity is the biological variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic, species, and ecosystem level. Terrestrial biodiversity is usually greater near the equator, which is the result of the warm climate and high primary productivity.
Answer:
Bio means life
Explanation:
Biodiversity means life on earth.
7.
The speed of an electromagnetic wave is a constant, 3.0 x 108 m/s. The wavelength of a wave is 0.6 meters.
What is the frequency?
1.8 Hz
5.0 Hz
5.0 x 108 Hz
O 1.8 x 108 Hz
If you were part of a track and field team, what event would you like to participate in? And why? Please provide at least 3 complete sentences with your explanation.
I wouldn't participate in any event, I'd leave the track and field team.
The Hubble Space Telescope (HST) orbits 569 km above Earth's surface. If HST has a tangential speed of 7,750
m/s, how long is HST's orbital period? The radius of Earth is 6.38 x 106m. Make sure to use correct significant
figures.
Answer:
Mean radius of earth = 6.37E6 meters
Orbital radius = .569E6 meters
Total radius = (6.37 + .57) * 10^6 m = 6.94E6 m
P = S / t = 2 * pi * 6.94E6 / 7.75E3 sec = 5630 sec = 93.8 min
Cho q1= 8.10 mũ -8C ; q2 = -8.10 mũ -8C . Đặt tại 2 điểm A và B cách nhau 6cm trong không khí . Xác định lực điện dung dịch lên qo = 8.10 mũ -8C đặt tại : a. CA= 4cm , CB= 10cm b. CA=CB= 5cm c. CA= 6cm , CB= 6cm
Answer:
♂️
Explanation:
♂️♂️♂️
EASY but I still need help lol
A student does 686 J of work on an object in 3.1 seconds. What is the power output of the student?
Answer:
221.29 Watts
Explanation:
P=W/t
P=686/3.1
P=221.29 Watts
What is the constraint forces
Answer:
(1) Support
(2) Tension
(3) Reaction
The constraint forces are forces that occur in pairs such that the net force (effect) is zero
The details of the constraint forces are;
(1) The support force at the top of the swing acting upwards
(2) The tension in the swing rope acting upwards
(3) The (normal) reaction between the legs of the swing frame and the ground
Explanation:
The normal reaction is the force equal in magnitude and opposite in direction to the total weight force the swing and the person on the swing posses due to gravitational attraction which prevents the downward or sideways motion of the entire swing
All the things in an experiment that must be the same to determine if the results are truly due to the experiment are called
Independent variables
Dependent variables
Control variables
Observations
Alisa, a skateboarder, is riding down a hill. If Alisa and the skateboard are considered a single object, what forces are acting on her? Check all that apply.
Answer: gravity
normal force
friction
Explanation:
A force is refered to as the interaction which when unopposed, will lead to a change in an objects motion. The velocity of an object will be changed when force is applied.
Since Alisa s riding down a hill and she and the skateboard are considered to be a single object, then the forces that are acting on her include gravity, normal force and friction.
. It requires 250 N to lift up a bag full of hockey equipment. How much work is done while carrying it 12 m down the stairs into the basement?
( only need answer no work is needed )
Answer:
Explanation:
Work = force times displacement, therefore,
W = 250(12) so
W = 3.0 × 10³ N*m
Electromagnetic waves travel at a speed of 3.0 x 108 m/s. A radio station transmits waves
with a wavelength of 2.5 x 102 m.
Calculate the frequency of the radio waves.
Answer:
1.2×10⁶ Hz
Explanation:
Applying,
v = λf............. Equation 1
Where v = speed of wave, λ = wavelength, f = frequency.
make f the subject of the equation
f = v/λ............... Equation 2
From the question,
Given: v = 3.0×10⁸ m/s, λ = 2.5×10² m
Substitute these values into equation 2
f = 3.0×10⁸/2.5×10²
f = 1.2×10⁶ Hz
TENIENDO EN CUENTA LA FORMULA DE INTENSIDAD PARA B=4, Y I=10⁻9W/M²
A. 2,51X10⁻⁹W/M²
B. 3,16X10⁻⁷W/M²
C. 20X10⁻⁹W/CM²
D. 31,6X10⁻⁹W/CM²
Please help I’ll give brainliest
Answer:
Magnetic Field
Explanation:
Blank is the time rate of change in velocity
Acceleration is the time rate of change in velocity.
Acceleration = Rate of change of velocity