Answer:
the workenergy principle is measured in joules
the instrument used in measuring the speed of wind is called
Answer:
please give me brainlist and follow
Explanation:
Anemometers
The anemometer counts the number of rotations, which is used to calculate wind speed. An anemometer is an instrument that measures wind speed and wind pressure. Anemometers are important tools for meteorologists, who study weather patterns.
Which force can either repel or attract objects?
O A. Gravitational
O B. Weak nuclear
C. Strong nuclear
D. Electromagnetic
Answer:
D. electromagnetic forces
Explanation:
6A. Which pair of charges has a stronger attraction, top or bottom?
6B Based on the picture above, what is the relationship between
distance between charges and force?
What causes tides to occur?
The gravitational attraction between the Sun, Earth, and Moon.
The magnetic pull of the Earth's poles
The shaking of the earth during earthquakes
Seafloor spreading
Answer:
The gravitational attraction between the sun earth and moon
1. What is the supreme law of the United States?
Answer:
This Constitution, and the Laws of the United States which shall be made in Pursuance thereof; and all Treaties made, or which shall be made, under the Authority of the United States, shall be the supreme Law of the Land; and the Judges in every State shall be bound thereby
Hope it helps!
1. What is the difference between longitudinal and transverse waves? Compare and contrast
the direction of their movement, movement of a molecule through the completion of a cycle,
and amplitude and wavelength measurements of each type of wave.
Answer: image to much to type.
Explanation:
Approximately how much electrical energy does a 5-W lightbulb convert to radiant and thermal energy in one hour?
Answer:
18,000 j
Explanation:
the lightbulb dissipates 5W of power
P = ΔE / Δt
rearrange to solve for energy
ΔE = PΔt
P = 5W
t = 1 hour = 60 minutes = 3600 seconds
ΔE = 5 * 3600
ΔE = 18000 J
Objects 1 and 2 attract each other with a electrostatic force
of 36.0 units. If the distance separating Objects 1 and 2 is
changed to one-half the original value (i.e., halved), then the
new electrostatic force will be units.
Answer:
F = 144 units
Explanation:
For this exercise we use coulomb's law, for the initial conditions
F₀ = [tex]k \frac{q_1q_2}{r_o^2}[/tex]
indicate that the force F₀ = 36.0 units and the distance is reduced to r = r₀/2 which is the new force
F = [tex]k \frac{ q_1q_2 }{(r_o/2)^2}[/tex]
we substitute
F = 4 [tex]k \frac{q_1q_2}{r_o^2}[/tex]
F = 4 F₀
we calculate
F = 4 36
F = 144 units
¿Una corriente eléctrica sin resistencia puede fluir constantemente sin fuente alguna de potencia? Explique.
Answer:
No.
Explicación:
No, una corriente eléctrica sin resistencia no puede fluir constantemente sin ninguna fuente de energía porque la fuente de energía proporciona electrones para el flujo continuo de corriente en el circuito. Si fluye corriente por el cable, debe haber resistencia en el circuito. La fuente de energía proporciona corriente eléctrica continua al cable para que fluya y el cable tiene resistencia, por lo que parte de la corriente eléctrica se pierde durante su flujo debido a esta resistencia. Entonces podemos decir que la fuente de energía es necesaria para el flujo constante de corriente eléctrica.
An astronaut drops a 1.0 kg object and a 5.0 kg object on the Moon. Both objects fall a total distance of 2.0 m vertically. Which of the following bost describes the objects after they have fallen a distance of 1.0 m2
They have each gained one-half of their maximum kinetic energy
They have cach lost the same amount of potential energy
They have each gained the same amount of potential energy
They have each lost kinetic energy
Answer:
Chupapi munyaño hoyaaaa
What is the formula for calculating tension
Answer:
In other words, Tension (Ft) = Force of gravity (Fg) = m × g. Assuming a 10 kg weight, then, the tension force is 10 kg × 9.8 m/s2 = 98 Newtons.
About wave properties please help
Answer:
The basic properties (parts) of a wave include: frequency, amplitude, wavelength and speed. Frequency is a measure of how many waves pass a point in a certain amount of time. The higher the frequency, the closer the waves are together and the greater the energy carried by the waves will be.
Explanation:
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FOLLOW MY ACCOUNT PLS PLS
Rama's weight is 4okg: She is carrying a load of 20kg up to a height of 20 meters.what work does she do?Also mention its type of work
Answer:
rama is doing
Explanation:
work done=f×d×g
=60×20×9.8
=11760j
she is doing work against gravity
mark me
Sphere B of charge +8q is at a distance a to the left of sphere A, and sphere C of charge +2q is to the right of sphere A.
What must be the distance from sphere A to sphere C on the right such that the original small sphere remains at rest?
Answer:
The distance from sphere A to sphere C on the right such that the original small sphere remains at rest is a/2
Explanation:
The force of a charge at a point is given as follows;
From an online source, we have;
E₁ + E₂ = 0
The electric field due to the sphere B of charge +8q = E₁
[tex]E_1 = \dfrac{k \cdot (8 \cdot Q)}{a^2}[/tex]
The position of the sphere B = A distance 'a' to the left of 'A'
The electric field due to the sphere C of charge +2q = E₂
The position of the sphere C = A distance to the right of 'A'
Therefore, for the electric field strength of sphere 'B' at 'A', we have;
[tex]E_1 = \dfrac{k \cdot (8 \cdot Q)}{a^2} = 4 \times \dfrac{k \cdot (2 \cdot Q)}{a^2}[/tex]
Let 'x' be the distance of the +2q charge to the right of 'A', we have;
[tex]E_2 = \dfrac{k \cdot (2 \cdot Q)}{x^2}[/tex]
Therefore, for the force of the +2q charge to balance the +8q charge at C, we have;
[tex]\dfrac{k \cdot (2 \cdot Q)}{x^2} = \dfrac{k \cdot (8 \cdot Q)}{a^2} = 4 \times \dfrac{k \cdot (2 \cdot Q)}{a^2}[/tex]
[tex]\therefore \ \dfrac{1}{x^2} = \dfrac{4}{a^2}[/tex]
[tex]\therefore \ \sqrt{ \dfrac{1}{x^2} }= \sqrt{\dfrac{4}{a^2}}[/tex]
[tex]\dfrac{1}{x} = \dfrac{2}{a}[/tex]
[tex]x= \dfrac{a}{2}[/tex]
Therefore, the distance, 'x', from sphere A to sphere C on the right such that the original small sphere remains at rest is x = a/2.
One of the ways that scientists determine the distance between Earth and other objects in space is to send light waves toward an object and measure how long it takes for the waves to bounce back. If a scientist sends light waves to four different objects in space, which of the following will take the longest to bounce the wave back to Earth?
a star in the Milky Way Galaxy
a star in the Andromeda Galaxy
a planet in Earth's Solar System
a planet in another star system within the Milky Way Galaxy
Answer:
a star in andromeda
Explanation:
all of the other objects are in the milkyway (where we are) and the andromeda galaxy is 2 million light years away from us
a horizontal force of 25 newtons eastward causes a 10 kg box to have a displacement of 5m eastward. The total work done by the 25 Newton force is?
Answer:
125 J
Explanation:
Work done = force * distance
work = 25 * 5
work = 125 J
When a cracker or bread dissolves in your mouth, is that a physical or chemical change?
Answer:
Chemical change.
Explanation:
The saliva or salivary amylase is a bio-catalyst...it causes chemical change during the dissolving process. Also, once the food is dissolved it can't be brought back to it's original state.
what do u mean by force ?
Answer:
pushing or moving something best answer lol
Answer:
a force is any interaction that, when unopposed, will change the motion of an object.
Freddie drives his car 10 km North. He stops for gas and then drives 5 km South.
What is Freddie's displacement.
Answer:
5 km
Explanation:
displacement is the straight line distance from a particular point. since north and south are in opposite directions, it means that he has taken a u-turn
thus, 10 - 5 = 5km displacement
A 0.25 kg book falls off a 2 m shelf on to a 0.5 m chair. What was the change in GPE?
The equation of GPE is mgH, where m is mass, g is gravitational acceleration, and H is the height.
If we're solving for the change in GPE, then:
∆[tex]U_{g}[/tex] = mg∆H
Input our given values for m and g:
∆[tex]U_{g}[/tex] = 0.25 * 9.80 * ∆H
The book falls from 2 meters high to 0.5 meters high, so:
∆[tex]U_{g}[/tex] = 0.25 * 9.80 * (2.0 - 0.5)
∆[tex]U_{g}[/tex] = 0.25 * 9.80 * 1.5
∆[tex]U_{g}[/tex] = 3.675 (J)
Adjust for significant figures:
∆[tex]U_{g}[/tex] = 3.7 (J)
The change in gravitational potential energy was 3.7 (J)
If you have any questions on anything I did to get to the answer, just ask!
- breezyツ
if mechanical advantage and velocity ratio of a machine are equal then the simple machine is called what
Answer:
hbyjhtcgfcyh
Explanation:
as the change in speed at the boundary of two materials is greater what happened to the angle of refraction (please help )
a. it becomes less
b. it becomes more
c. it stays the same
Can someone please help me with science.
Answer:
I think it is D or A
Explanation:
I have not done this in a long time, so sorry if wrong.
What is the electrical force between 91 and 92? Recall
that k = 8.99 * 109 Nom?
2 m
9, +6 C
9,=-40
+1 m +
O 4.3 x 1010 N
q = +3 C O 3,5 x 1010 N
O -5.4 x 1010 N
O -5.8 x 10101
Answer:
F = 5.39 x 10¹⁰ N
Explanation:
The electrical force between q₁ and q₂ can be calculated by Coulomb's Law:
[tex]F = \frac{kq_1q_2}{r^2}\\\\[/tex]
where,
F = electrical force = ?
k = Coulomb Constant = 8.99 x 10⁹ Nm²/C²
q₁ = first charge = +6 C = 6 C
q₂ = -4 C = 4 C
r = distance between charges = 2 m
Therefore,
[tex]F = \frac{(8.99\ x\ 10^9\ N.m^2/C^2)(6\ C)(4\ C)}{(2\ m)^2}\\\\[/tex]
F = 5.39 x 10¹⁰ N
Answer:
C on edge
Edge2021
Imangine a car moving down a street. From which reference point would the street appear to be moving?
A: From the sky
B:From the street
C:From the car
D: From the sidewalk
Help pls and thank you PLEASE NO LINKS
Answer: mutation
explanation: no other species of its kind will have this mutation
Answer:
Mutation
Explanation:
A 0.547 kg pizza is thrown straight up in the air. At a height of 2.30 m above the surface of the earth it has a speed of 5.00 m/s. Calculate the total mechanical energy of the pizza crust.
Answer:
The total mechanical energy of the pizza crust is 19.2 J.
Explanation:
Mechanical energy is that which a body or a system obtains as a result of the speed of its movement or its specific position, and which is capable of producing mechanical work. Then:
Potential energy + kinetic energy = total mechanical energy
Kinetic energy is a form of energy. It is defined as the energy associated with bodies that are in motion and this energy depends on the mass and speed of the body.
Kinetic energy is defined as the amount of work necessary to accelerate a body of a certain mass and in a position of rest, until it reaches a certain speed.
Kinetic energy is represented by the following formula:
Ec = ½ *m*v²
Where Ec is kinetic energy, which is measured in Joules (J), m is mass measured in kilograms (kg), and v is velocity measured in meters over seconds (m / s).
In this case:
m=0.547 kgv= 5 m/sReplacing:
Ec = ½ *0.547 kg*(5 m/s)²
and solving you get:
Ec= 6.8375 J
On the other hand, potential energy is the energy that measures the ability of a system to perform work based on its position. In other words, this is the energy that a body has at a certain height above the ground.
Gravitational potential energy is the energy associated with the gravitational force. This will depend on the relative height of an object to some reference point, the mass, and the force of gravity. Then for an object with mass m, at height h, the expression applied to the gravitational energy of the object is:
Ep = m*g*h
Where Ep is the potential energy in joules (J), m is the mass in kilograms (kg) is h the height in meters (m) and g is the acceleration of fall in m / s² (approximately 9.81 m/s²)
In this case:
m= 0.547 kgg= 9.81 m/s²h= 2.30 mReplacing
Ep= 0.547 kg *9.81 m/s²* 2.30 m
and solving you get:
Ep= 12.342 J
So:
Total mechanical energy= 12.342 J + 6.8375 J
Total mechanical energy= 19.1795 J≅ 19.2 J
The total mechanical energy of the pizza crust is 19.2 J.
magnet attracts nails but not copper vessels
Calculate the pressure at the middle of a glass jar,40cm tall and filled with Liquid A of density 9000kg/m3
Answer:
P = 17658 Pa = 17.658 KPa
Explanation:
The pressure applied by a liquid at a given depth is given by the following formula:
[tex]P = \rho gh\\[/tex]
where,
P = Pressure = ?
ρ = density = 9000 kg/m³
g = acceleration due to gravity = 9.81 m/s²
h = depth = 40 cm/2 = 20 cm = 0.2 m
Therefore,
[tex]P = (9000\ kg/m^3)(9.81\ m/s^2)(0.2\ m)\\\\[/tex]
P = 17658 Pa = 17.658 KPa
What is the current reading on ammeter A
Answer:
0.8A
Explanation: