Answers
Answer:
1. A
2. C
3. A
4. B
Explanation:
A conductor allows electric current to pass through it. Hence, when conductors are connected in a closed circuit, current flows.
All the resistors in Q2 are connected in series. In a series connection, the current across all the resistors is the same.
In a battery, chemical energy is converted to electrical energy by chemical reactions.
When a new resistor is connected in parallel to a circuit the current increases accordingly.
Related Questions
What force must be applied to the end of a rod along the x-axis of length 2.25 m in order to produce a torque on the rod about the origin of 11 z-hat N·m? Choose among the available options below. x,y,z,-z
Answers
Answer:
4.9N approx.Explanation:
Step one:
given data
length of rod r= 2.25m
Required torque = 11 Nm
Required
The force needed to produce a torque of 11Nm
Step two:
"By definition, Torque is the twisting force that tends to cause rotation.
The point where the object rotates is known as the axis of rotation."
Mathematically,
[tex]\tau = rF\sin\theta[/tex]
[tex]\tau[/tex] = torque
r = radius
F = force
[tex]\theta[/tex] = angle between F and the lever arm
in this case is zero
[tex]\tau = rF\\\\F=\tau/r[/tex]
substituting we have
F=11/2.25
F=4.88N
F=4.9N approx.
After 4 half-lives, I ended up with 10 gram sample of
Carbon-14. What was the original amount of Carbon-14
that I started with?
Answers
Answer:
80g
Explanation:
The half - life is the time taken for half of radioactive substance to decay to half of its original composition.
After 4 half lives, the carbon - 14 sample is 10grams
Now let us trace the decay of this substance;
At the 3rd half life, it will have double the amount at the 4th half life;
2 x 10 = 20g
At the 2nd half life, there will be double the amount at the 3rd half life;
20 x 2 = 40g
Originally, we are going to have;
40 x 2 = 80g
b. If we drop a ball from the roof, its falls
downward
Answers
Answer:
yes ,what's the question
and if the question is why
then it's for gravity
Answer:
the ball falls downward due to gravity
The temperature of a substance is 45 C. Convert this to Kelvin.
Answers
Answer:
it will be 318.5 Kelvin
What is the internal composition of the planet Venus?
Answers
Answer:
Structure. Venus is in many ways similar to Earth in its structure. It has an iron core that is approximately 2,000 miles (3,200 kilometers) in radius. Above that is a mantle made of hot rock slowly churning due to the planet's interior heat.
Explanation:
Answer:
It has an iron core 2,000 miles in Radius. Its a hot rock slowly churning due to the heat.
Explanation:
Hope this helps ∞<3
An object is solely influenced by the force of gravity and follows a parabolic path such as a rock thrown into the air. This is known
as what type of motion?
A)
circular
B)
linear
C)
periodic
D)
projectile
Answers
Answer:
B
Explanation:
Which of the following would increase the gravitational force of attraction between two objects?
A.-Doubling the mass of both objects, only
B.-Doubling the mass of both objects and doubling the distance between the objects
C.-Doubling the mass of one object and doubling the distance between the objects
D.-Doubling the distance between the objects, only
Answers
Answer:
Doubling the mass of both objects
Explanation:
If you double the mass of both objects, the gravitational force will quadruple, if you move the objects away from each other, the gravitational force will decrease
The gravitational force of attraction is increased by doubling the mass of both objects.
According Newton's law of Universal gravitation force, two objects in the universe attracts each other with a force that is directly proportional to the product of their masses and inversely proportional to the square of distance between them.
[tex]F = \frac{Gm_1 m_2}{R^2}[/tex]
where;
R is the distance between the two objectsThus, we can conclude that by doubling the mass of both objects or reducing the distance between them, the gravitational force of attraction increases.
Learn more here:https://brainly.com/question/13590473
please help I’m struggling
Answers
Answer:
11025 J
183.75 W
Explanation:
[tex]W=mgh\\W=(75\ kg)*(9.8\ m/s^{2})*(15\ m)\\W=11025\ J\\\\P=work/time\\P=(11025\ J)/(60\ s)\\P=183.75\ W[/tex]
Earthquakes
Shaking of the ground
Seismographs
Scientific method
Answers
Answer:
C. seismographs
Explanation:
Theirs another name for seismographs but c is correct
Which of the following is true about particles of matter?
Answers
Answer:
Matter is a substance which has mass and takes up space by volume the properties of matter are,
States of matter (solid,liquid,gas)are inter convertable.
Force of attraction varies from one kind of matter to another.
States of matter can be varied by varying temperature and pressure.
Explanation:
HELP ASAP FAST PLEASE I NEED HELP
Mechanical energy is defined as
Question 1 options:
the energy of motion and position, which is represented by the formula KE + PE = ME
potential energy
Energy of motion
Energy of machines and tools
Answers
Answer:
energy of motion is represented by formula KE+PE=ME
Answer:
formula:
KE+PE=ME
Explanation:
HOPE IT HELPS!
thank me later
What is the minimum number of days per week you should exercise?
Answers
Answer:
Three days per week on average
Explanation:
I'd say 3 days at least to be healthy
The gravitational pull between Pluto and the sun would be increased if...
A. Pluto was farther from the sun
B. Pluto was closer to the sun
Answers
Answer:
B. Closer to the Sun
Explanation:
I say this because the farther the weaker of a pull the Earth will have on it.
Let Me Know if I am right :)
please help! i'll give brainliest!!
In a electromagnet that is made up of a D-cell battery with wire wrapped
around an iron nail, the ends of the wire being taped to the battery, what is
the core of the electromagnet?
D battery
wire
tape
iron nail
Answers
Answer:
it right. Its The Iron Nail i just did it and i got correct (:
Explanation:
The core of the electromagnet if In an electromagnet that is made up of a D-cell battery with wire wrapped around an iron nail, the ends of the wire being taped to the battery is iron nail so, option D is correct.
What is an electromagnet?A coil surrounding a magnetic core through which an electric current is conducted to magnetize the core is an electromagnet. Wherever controlled magnets are needed, such as in devices where the magnetic flux needs to be adjusted, reversed, or turned on and off, an electromagnet is utilized.
The idea of the magnetic circuit systematizes the engineering design of electromagnets. The ampere-turns of the coil that creates the magnetic field and magnetic flux in the magnetic circuit are known as the magneto motive force F, or Fm, in this context.
Thus, the core is an iron nail.
To know more about electromagnet:
https://brainly.com/question/18566164
#SPJ2
a block weighing (Fg) 50 N is resting on a steel table (us = 0.74). The minimum force to start this block moving is what N
Answers
Answer:37
Explanation:
PLEASE HELP ASAP 4. Which statement best describes elastic and inelastic collisions most accurately?
a. Momentum is not conserved in both elastic and inelastic collisions
b. Momentum is only sometimes conserved in both types of collisions, because sometimes
an object slows down after a collision, which means the object lost momentum.
Momentum is always conserved in elastic collisions, but only sometimes conserved in
inelastic collisions because momentum is lost when the objects stick together.
d. Elastic collisions have objects that bounce apart after the collision, while in inelastic
collisions the objects stick together. Momentum is conserved in both types of collision.
C.
Answers
Answer:
I think the answer is a if am wrong am sorry
Explanation:
When were the following metals discovered:
A. Iron
B. Gold
C. Brass
PLEASE ANSWER ALL !!!
Answers
Answer:
A. 4000 BC
B. January 24, 1848
C. 1400 BC
Explanation:
Please mark brainliest.
Which element has a complete valence electron shell?
a selenium (Se)
b oxygen (O)
c fluorine (F)
d argon (Ar)
WILL GIVE BRAINLY FIRST AWNSER
Answers
Answer:
the answer is d.
Explanation:
Argon (Ar) has a complete valence electron shell.
Answer:
d) argon
.............
5. Describe the relationship between the buoyant force and the weight of an object if the object:
a) is floating
b) is sinking
c) is rising up through the water.
Answers
A) the state of deep mental and physical therapy or relaxation
B) falling or moving to a lower level
C) up to owns kness
Tony sets up an experiment inside his classroom. He spaces 5 plants at equal distances along a straight line, with the first plant directly in front of a window and the last plant 10 meters (m) away from the window. He gives them equal access to air and water and then monitors the amount of gas each plant releases.
Answers
Answer:
I also need answer for this one asap
Explanation:
Answer:
c
Explanation:
because
A person weighs 734 N. What is their mass?
Answers
Answer:
Explanation:
Mass / Weight Converter Definitions. Ounce Avoir. An avoirdupois ounce is equal to 28.349523125 grams. The ounce is commonly used as a unit of mass in the United States and around the World. Ounce Troy. A troy ounce (abbreviation: t oz) is equal to 31.1034768 grams.
Answer:
74.84717
Explanation:
Whet net force is required to accelerate a car at a rate of 10 m/s2 if the car
has a mass of 5,000 kg?
Answers
Answer:
[tex]\boxed {\boxed {\sf 50,000 \ Newtons }}[/tex]
Explanation:
Force can be found by multiplying the mass by the acceleration.
[tex]F=m*a[/tex]
The mass of the car is 5,000 kilograms and it's acceleration is 10 meters per square second.
[tex]m= 5,000 \ kg \\a= 10 \ m/s^2[/tex]
Substitute the values into the formula.
[tex]F= 5,000 \ kg * 10 \ m/s^2[/tex]
Multiply.
[tex]F= 50,000 \ kg*m/s^2[/tex]
1 kilogram meter per square second is equal to 1 Newton. So, our answer of 50,000 kg*m/s² is equal to 50,000 Newtons[tex]F= 50,000 \ N[/tex]
A net force of 50,000 Newtons is required to accelerate a 5,000 kilogram car at 10 meters per square second.
Why is it possible to see yourself in an object that reflects light, but not in one that scatters light?
Answers
A 0.85-kg arrow flies through the air at a speed of 19 m/s. What is the momentum of the arrow?
16 kg m/s
22 kg m/s
160 kg m/s
360 kg m/s
Answers
Answer:
16 kg m/sExplanation:
The momentum of an object can be found by using the formula
momentum = mass × velocity
From the question we have
momentum = 0.85 × 19 = 16.15
We have the final answer as
16 kg m/sHope this helps you
State the equation that links thinking distance, braking distance and stopping distance
Answers
SOMEONE PLEASE HELP WITH THIS QUESTION!!!!
Answers
Answer:
A 1
B 3
c 4
d 3
Explanation:
we are chaimpon boy i topped my school by cheating so donot study chill and watch movies like of sunny leon and Sabita bhabi
The more oxygen the muscles receive, the more energy you have
Answers
Answer:
true
Explanation:
I think If I am not tell me
Force applied through a rope or string
A. force caused by gravity/weight force
B. Normal force
C. Friction force
D. Tension force
E. Applied force
Answers
According to the law of universal gravitation, gravity is the force keeping objects in the universe in their relative positions.
true
false
Answers
Answer true
Explanation
a pulley system with a diameter of 0.5 meters lifts an object 736 meters in 1.05 minutes. how many radians did the pulley move ? how many revolutions did the pulley make ? what was the angular velocity? what was the linear velocity ?
Answers
its b welcome
Explanation: