Answer:
using V= IR
I= 11Ampere
Match the following. Match the items in the left column to the items in the right column.
1. March 21
7
North Pole
2. Arctic
vernal equinox
3. December 21
longitude
4. meridians
lowest point on earth
5. September 23
latitude
6. Greenwich, England
South Pole
7. Antarctic
winter solstice
8. Marianas Trench
autumnal equinox
9. parallels
Prime Meridian
10. International Date Line
180th meridian
Answer:
March 21 = Vernal Equinox
Artic = North Pole
December 21 = Winter Solstice
Meridians = Longitude
September 23 = Autumnal Equinox
Greenwich, England = Prime Meridian
Antarctic = South Pole
Marianas Trench = Lowest point on earth
Parallels = Latitude
International Date Line = 180th Meridian
Explanation:
A bullet with a mass of 0.040 kg collides inelastically with a wooden block of mass 1.5 kg, initially at rest. After the collision, the bullet along with the block has a speed of 1.0 m/s. Calculate the initial speed of the bullet.
Answer:12.43 m/s
Explanation:
who is a producer that produces a product that is sold at walmart? please answer thank you!! <3
Answer:
Con Agra and Sare Lee
Explanation:
HELP LOOK AT THE PICTURE
Answer:
Resistance, R = 2.5 Ohms
Explanation:
Given the following data;
Voltage = 10 V
Current = 4 A
To find the resistance;
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 resistance, R the subject of formula, we have;
[tex] R = \frac {V}{I} [/tex]
Substituting into the equation, we have;
[tex] R = \frac {10}{4} [/tex]
Resistance, R = 2.5 Ohms
Therefore, the resistance of the resistor in the electrical circuit is 2.5 Ohms.
when you hear sounds made by a speaker, it is because air molecules have moved from the speaker to the ear
TRUE OR FALSE
mechanical advantage is always less than velocity ratio,why?
because mechanical advantage decreases due to the friction and weight of moving parts of the machine whereas the velocity ratio remains constant
hope it helps you
Which of the following football players have the same momentum?
Ted: mass = 60 kg, velocity = 2.0 m/s
Todd: mass = 80 kg, velocity = 1.7 m/s
Tom: mass = 90 kg, velocity = 1.5 m/s
Tim: mass = 100 kg, velocity = 1.2 m/s
a. Ted and Todd
b. Todd and Tim
c. Ted and Tim
d. None of the above.
Answer: Ted and Tim
Explanation:
The football players Ted and Tim have the same momentum, which is 120 kg m/s. Hence, option C is correct.
What is momentum?The momentum is the result of a particle's velocity and mass. Force and motion, meaning it has both magnitude and direction. According to Isaac Newton's second equation of motion, the force acting on a particle equals the time rate of increase of momentum.
The impulse, which is the product of the force and the intervals (the impulse), is equal to the difference in momentum, according to Newton's 2nd law, if a steady force operates on a particle for a specific amount of time. On the other hand, a particle's momentum is the amount of time needed for a consistent action to fight it to rest.
As per the given information in the question,
The momentum of Ted is,
p = 60 × 2 = 120 kg m/s
The momentum for Todd is,
p = 80 × 1.7 = 136 kg m/s.
The momentum of Tom is,
p = 90 × 1.5 = 135 kg m/s and,
The momentum for Tim is,
p = 100 × 1.2
p = 120 kg m/s.
After comparing the momentum of all the players, Ted and Tim have similar momentum.
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Helppp pleaseeeeeeee. NO LINKS. HELP HELP HELP
Answer:
Choice A
Explanation:
The lower the point the higher the kinetic energy because Mechanical energy is conserved and the Gravitational Potential Energy gets lower when the height is lower
what type would never freeze
Answer:
Ummmm Human's I don't understand your answer
Explanation:
Have a Nice Day
what is the formula of effort
Answer:
Hey mate.....
Explanation:
This is ur answer.....
The formula to calculate force is: force = mass x acceleration, or F = m x a, where force and acceleration have both magnitude and direction.
Hope it helps!
Brainliest pls!
Follow me! :)
in an atom what is the number of protons that equal number
Answer:
The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus.
Explanation:
A laser beam travels from a telescope on Earth to a Moon and then back to the Based on this information , how far is the Moon Earth? PLEASE HELP?
A. 384,000,000
B. 58.600, 000m;
C. 1, 536, 000, 000m
D. 117, 000, 000m
How much force will your need to move a 200 pound refrigerator onto a truck bed that is five feet high if you use a 10 foot inclined plane?
Answer:
P = 100 lb
Explanation:
For an ideal machine:
[tex]Work\ In = Work\ Out\\(P)(L)=(W)(H)[/tex]
where,
P = Effort = Input Force = ?
L = Effort Arm = Length of inclined plane = 10 ft
W = Load to be lifted = 200 lb
H = Load Arm = Height = 5 ft
Therefore,
[tex]P(10\ ft) = (200\ lb)(5\ ft)\\\\P = \frac{(200\ lb)(5\ ft)}{10\ ft}[/tex]
P = 100 lb
Kevin bikes to the pizza place for lunch. He rides 1 km east, 3 km north, 4 km west, and finally 3 km south. What was his displacement?
Answer:
3kmExplanation:
To get the displacement, we will make use of the expression;
[tex]D = \sqrt{(\sum d_x)^2+(\sum d_y)^2}[/tex]
Taking the sum of the distances along the x;
dx = 1km - 4km
dx = -3km
Taking the sum of the distances along the y axis
dy = 3km - 3km
dy = 0km
Substitute into the formula above;
[tex]R = \sqrt{(-3)^2+(0)^2}\\R = \sqrt{9} \\R = 3km\\[/tex]
Hence his displacement is 3km
An astronaut weighs 200 N on the Moon where gravity is 1.62 m/s/s. Find his weight on Earth. HELP PLEASE FAST
Answer:
the weight of the astronaut on Earth is 1209.88 N
Explanation:
Given;
weight of the astronaut, W = 200 N
acceleration due to gravity on moon, g = 1.62 m/s²
Apply Newton's second law of motion to determine the mass of the astronaut;
F = ma = mg
m = F/g
m = 200 / 1.62
m = 123.457 kg
The weight of the astronaut on Earth is calculated as follows;
F = mg
where;
g is acceleration due to gravity on Earth = 9.8 m/s²
F = 123.457 x 9.8
F = 1209.88 N
Therefore, the weight of the astronaut on Earth is 1209.88 N
A student says an organism that is both a first level and second level consumer is an ominvore. Is that student correct? Explain.
PLZ HELP ILL MARK BRAINLIEST!!!
A 10kg box accelerates forward at a rate of 12 m/s^2. What is the force acting on the box?
120N
N8'0
ON
Answer:
120N
Explanation:
Newton's second law formula: F= ma
given that m = 10 kg, a = 12 m/s^2
F = ma = 10 kg * 12 m/s^2 = 120 kgm/s^2 = 120 N
The force acting on the box is equal to 120N. Therefore, option (A) is correct.
What is Newton's second law of motion?According to Newton's 2nd law of motion, The force acting on an object is equal to mass times the acceleration of that object.
This law tells that the acceleration of a moving body depends upon two variables in which one is the mass of the object which is constant while the other is the force acting on that object. The acceleration of an object increases as the mass of the object is less.
The mathematical equation of the second law of motion can be written as:
F = ma
Given, the mass of the box, m = 10 Kg
The acceleration of the box, a = 12m/s²
We can find the force acting on the box by putting the values a and m:
Force acting on the box, F = 10 ×12 = 120 N
Therefore, the force acting on the box is equal to 120 newtons.
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A 0.017 g coin sliding to the right at 0.255 m/s makes an elastic head-on collision with a 0.040 g coin that is initially at rest. After the collision, the 0.017 g coin moves to the left at 0.108 m/s. Find the final velocity of the other coin.
Answer:
[tex]\approx 0.154\:\mathrm{m/s}[/tex]
Explanation:
In all collisions, whether elastic or inelastic, momentum must be conserved. Therefore, we can write an equation using the conservation of momentum:
[tex]m_{c1}v_{c1,i}+m_{c2}v_{c2,i}=m_{c1}v_{c1,f}+m_{c2}v_{c2,f}[/tex]
Solving for [tex]v_{2c,f}[/tex]:
[tex]0.000017\cdot 0.255+0.000040\cdot0=0.000017\cdot (-0.108)+0.000040\cdot v_{c2,f},\\v_{c2,f}\approx \boxed{0.154\:\mathrm{m/s}}[/tex]
*Notes:
-It's important to convert g to kg, as kg is the SI unit of mass
-The negative sign in a velocity measure represents direction
-Since the velocity we solved for is positive, it implies that the direction is to the right
1pt If an object is moving at a constant velocity, it means that....
A. no net force is acting on it
B. a constant force is acting on it in the direction of its motion
c. a constant force is acting on it in the opposite direction of its motion
D. several forces are acting on it, but one force is greater than the others
Answer:
thecool me
Explanation:
help for brainliest!
In mirrors all real images are?
A. smaller than the object B. inverted
C.upright
D. virtual
A “real” image occurs when light rays actually intersect at the image, and become inverted, or turned upside down. ... In flat, or plane mirrors, the image is a virtual image, and is the same distance behind the mirror as the object is in front of the mirror. The image is also the same size as the object.
A 75.0 Ohm resistor uses 0.285 W of power. What is the voltage across the resistor?
Answer:4.62
Explanation:
Acellus
4.- Una vagoneta de 1000 kg de peso parte del reposo en el punto 1 y desciende, sin rozamiento, por la vía indicada en la figura. A) Calcular la fuerza que la vía ejerce sobre la vagoneta en el punto 2, donde el radio de curvatura es de 6 m. B) Determinar el mínimo valor del radio de curvatura en el punto 3 para salvar dicho punto
Answer:
A) 49,050 N
B) 16 m
Explanation:
Question:
El dibujo de la pregunta se obtiene de un documento titulado "TRABAJO DIVERSO Y ENERGÍA" que se encuentra en línea y se presenta aquí.
La masa dada del vagón, m = 1,000 kg
La altura del punto en el que descansa el vagón, punto 1, h₁ = 12 m
A) El radio en el punto 2, el punto más bajo, R = 6 m
La fuerza, 'N', que la vía ejerce sobre el vagón en el punto 1 viene dada por la siguiente relación;
N = El peso del vagón + La fuerza de movimiento del vagón
∴ N = m × g + m × a
Dónde;
g = La aceleración debida a la gravedad ≈ 9,81 m / s²
a = La aceleración del vagón
Observamos que para el movimiento circular, la fuerza de movimiento del vagón, m × a = La fuerza centrípeta que actúa sobre el vagón = m × v² / R
∴ m × a = m × v² / R
Dónde;
v² = La velocidad del vagón en el punto 2 = 2 · g · h₁
Por lo tanto;
N = m × g + m × a = m × g + m × v² / R = m × g + m × 2 · g · h₁ / R
∴ N = 1000 × 9,81 + 1000 × 2 × 9,81 × 12/6 = 49,050
La fuerza que ejerce el vagón en el punto 2, N = 49,050 N
B) En el punto 3, tenemos;
N = m · g - m · a₃
La fuerza centrípeta en el punto 3, m · a₃ = m · v₃² / R₃
∴ La altura en el punto 3, h₃ = 4 m
El cuadrado de la velocidad en el punto 3, v₃² = 2 · g · (h₁ - h₃)
Para que el vagón esté seguro en el punto 3, la fuerza de la vía sobre el vagón, N = 0 para que el vagón permanezca en la vía actuando
Por lo tanto;
N = m · g - m · a₃ = 0
m · g = m · a₃ = m · v₃² / R₃ = m · (2 · g · (h₁ - h₃)) / R₃
∴ R₃ = (2 · g · (h₁ - h₃)) / g = (2 · (h₁ - h₃)) = 2 × (12 - 4) = 16
El radio de curvatura en el punto 3 para que el punto sea seguro es R₃ = 16 m.
Ejercicio 5. En el año 1985 fue puesto en órbita el primer satélite de México, el Morelos 1. Dicho satélite orbitaba la Tierra a una altura de 35 800 km (35.8 x10^6 m).
a) Obtenga el radio de la órbita del satélite (r = R +h)
b) Calcule la velocidad del Morelos 1
c) Obtenga el periodo de rotación en horas
d) ¿Cuál es el valor de la intensidad del campo gravitacional en la órbita del Morelos 1?
Answer:
a) Obtenga el radio de la órbita del satélite (r = R +h)
Explanation:
To understand the photoelectric effect physiciests should view light as having what type of properties?
Answer:
Particle
Explanation:
To understand photoelectric effect the physicists has to view light as a particle and not wave. The wave nature of the light could not explain the phenomenon of photoelectric effect.
Photoelectric effect is emission of electrons from a material when electromagnetic radiation(Light) is incident on it. These emitted electrons are called photoelectrons.
The explain this effect Einstein proposed that beam of light is can not be a wave propagating through space, but a swarm of discrete energy packets, called as photons.
Oxygen has 6 valence electrons. how many hydrogen atoms (who have 1 valence electrons) can bond with it? remember the octet rule.
Answer:
Oxygen starts with six valance electrons and ends with six valance electrons but after bonding has parts of the densities of 8 electrons
Explanation:
Chemical bonding does not increase the valance electrons. Oxygen has 6 valence electrons. Bonding is sharing of valance electrons
The electron density of two of the valance electrons of Oxygen are shared with the Hydrogen atoms. The Hydrogen atoms is turn share part of the electron density of their single electron with Oxygen.
This means that there are parts of 8 electron densities around the Oxygen. This does not increase the number of valance electrons of Oxygen. (Note the sharing is very unfair, Oxygen gets more than its
share of the electron densities of the two electrons used for the chemical bond.
Explanation:
Which change would create light?
A. An electron in an atom jumping from a lower energy state to a higher one.
B. Two electrons from the same atom colliding
C. An electron in an atom jumping from a higher energy state to a lower one.
D. Two electrons from two different atoms colliding.
Answer:
Im not 100% sure but i think the answer is A. An electron in an atom jumping from a lower energy state to a higher one.
Explanation:
lmk if its wrong
What is the efficiency of a frictionless ramp that is 10 meters long and 1 meter high?
50%
100%
10%
1000%
Answer:
1000Explanation:
because ( ・ั﹏・ั)( ・ั﹏・ั)( ・ั﹏・ั)
Why would African Americans like the song "Respect"?
A. It represented African Americans and their struggle for equality.
B. It represented African Americans and their success in achieving
equality.
C. It represented African Americans and their fight for African
independence.
D. It represented African Americans and their struggle to end slavery.
B. It represented African Americans and their struggle for equality.Answer:
Explanation:
A species introduced in a new habitat can cause problems by:
A. decreasing food supplies for native species
B. over reproducing because they have no predators
C. feeding on native specie
D. All of the above
Which must be tested to see if it is supported?
A.) a problem
B.) a variable
C.) a hypothesis
D.) a data collection