Answer:
r = 0.37 m
Explanation:
Use Coulomb's law to solve for r:
F = kq1q2/r^2
---> r^2 = kq1q2/F
= (8.99×10^9)(5.6×10^-4)(-2.1×10^-4)/(-7.7×10^3)
= 0.1373 m^2
or r = 0.37 m
Two 1.2 kΩ resistors are in series and this series combination is in parallel with a 3.3 kΩ resistor. The total resistance is
Explanation:
you have to divide by 2 and times by 2
A car with a mass of 2000 kg accelerates at 6 m/s'at a green light. What is the car's force?
Answer:
Car's force is 12000 N.
Explanation:
→ Force = Mass × Acceleration
→ Force = 2000 kg × 6 m/s²
→ Force = 12000 NIn the oxygen cycle, oxygen is
(Choose one):
1.) added to and removed from the atmosphere by photosynthesis.
2.) added to the atmosphere by cellular respiration and removed by photosynthesis.
3.) added to the atmosphere by decomposers and removed by photosynthesis.
4.) added to the atmosphere by photosynthesis and removed by cellular respiration and combustion.
Answer:
4.) added to the atmosphere by photosynthesis and removed by cellular respiration and combustion.
Explanation:
The atmospheric cycle is a biogeochemical cycle and is a transition between the oxidation state in ions, oxides, and molecules. The largest reservoir on the earth for oxygen island or lithosphere. The crust and mantle together make up 99.5% of oxygen by volume. The rest is found in the air that 21%, 22% in the biosphere, and 33% in the hydrosphere.which types of change observe the law of conservation of mass? single answer
A. only changes of state
B. only physical changes
C. only chemical changes
D. physical changes and chemical changes
Answer:
d
Explanation:
d just because it is and it's talking about mass and physical match's up with mass
7. The Voyager 1 space probe was launched in the 1970's and is now the furthest
man-made object from earth - it has actually left the solar system. At its current speed it
could travel across the US, a distance of about 4500 km in 265 seconds (a little less
than 5 minutes!) What is its average speed in kilometers per second?
What is the length of a string with a mass of 2.5 kg, with a
tension of 20 N, if the speed of wave on the string is 2 m/s?
Answer:
.5 m
Explanation:
It is correct lol.
when the net force of opposite forces is zero , the forces are
A. not even
B. unequal
C. unbalanced
D. balanced
The filament is broken in a light bulb. The circuit is now
a. open circuited
b. closed circuited
c. neither closed nor open
Answer:
It is A. Open Circuit.
Explanation:
Filament heats up and produces the light. If the filament breaks, the current does not flow and the circuit will be open. The ammeter will reach zero when this happens.
HELP ILL MAEK BRAINLIEST!!!
Match the following activities.
1. amount of force times the distance it moves an object
force of gravity
2. kind of force used to operate engines
steam
3.
English unit of measuring work equal to moving one pound
one foot
work
4.
metric measurement of work equal to moving one newton
one meter
muscular force
5. kind of force that pulls things toward the center of the earth
newton-
meter
6. force used when walking
force of wind
7. force used to turn a windmill
foot-pound
I WILL MARK YOU THE BRAINLIEST NO LINKS
The weight of the fluid that an object displaces is equal to the buoyant force acting on the object is
spring force
Archimedes Principle
buoyant force
Hooke's Law
Answer:
Archimedes' Principle
Explanation:
Its because Archimedes' Principle states "that the buoyant force on an object is equal to the weight of the fluid displaced by the object.... If you want to know the buoyant force on an object, you only need to determine the weight of the fluid displaced by the object."
Friction _____.
1.happens whenever work is done
2.does not happen in the air
3.releases energy as light
4.absorbs heat energy
A disadvantage of a _____
telescope is that you need very large lenses.
A. refracting
B. reflecting
which drawing below represents the electric field surrounding two objects that have equal magnitude changes of opposite polarity?
Answer:
the 3rd one
Explanation:
j cause I think so
When the forces acting on a stationary object are unbalanced, the object will
A. remain stationary
B. begin moving and speed up
C. remain moving at a constant speed
D. No effect
Answer:
B
Explanation:
Well it is certainly not no effect. Something has to happen. Not D.
If the balances are unbalanced it means that there is a force left over that can cause an acceleration. The speed is not constant when there is an acceleration. Not C
Unbalanced forces mean that there has to be something happening. Unless the friction cannot be overcome, there will be motion. Not A. But it is your second best answer if there is friction.
The answer I think you are intended to give is B.
18. A series circuit has an array of light bulbs connected. One burns out.
What will happen to the rest of
the bulbs?
*
Most will also burn out
Half will switch off and half will remain on
They will all remain on
They will all switch off
A point charge at the origin of a coordinate system produces the electric field E=(56,000 N/C) x on the x-axis at the location x=-0.65m. Determine the sign and magnitude of the charge.
Answer:
q = 1.95 x 10⁻⁶ C = 1.95 μC
Explanation:
The formula for the electric field produced by a point charge is given as follows:
[tex]E = \frac{kq}{r^2}\\[/tex]
where,
E = Electric Field strength = 56000 N/C
k = Colomb's Constant = 9 x 10⁹ Nm²/C²
q = magnitude of charge = ?
r = distance = 0.65 m
Therefore,
[tex]56000\ N/C = \frac{(9\ x\ 10^9\ Nm^2/C^2)q}{(0.56\ m)^2}\\\\q = \frac{(56000\ N/C)(0.56\ m)^2}{9\ x\ 10^9\ Nm^/C^2}\\\\[/tex]
q = 1.95 x 10⁻⁶ C = 1.95 μC
Two point charges are separated by a distance of 1 meter. How much would the force change if one charge was 4x larger?
Answer:
the force would increase 4 times more
Explanation
more force results more mass or acceleration
Answer:
it would grow by 4x
Explanation:
I shall give you the ruler.change to passive
Answer:
The ruler shall be given to you.
I tried but that's basically how it should look.
I'm contrast to Venus the coldest temperature yet measured on the surface of any body in the solar system is -235C
Answer:
Explanation:
I don't get what the relation here is. Venus is the hottest planet in our solar system. And yes, it's hotter than mercury despite mercury being closer to the sun. And your question talks about the coldest temperature measured which is -235 degrees Celsius. That surely isn't measured on Venus. I'm only wondering what Venus has got to go with cold and what exactly your question is
Based on information from the graph above, what can be concluded about the relationship between the temperature of a solvent and the solubility of a solute?
A. No conclusions can be drawn.
B. For most solutes, as temperature increases, the solubility is unaffected.
C. For most solutes, as temperature increases, the solubility increases.
D. For most solutes, as temperature increases, the solubility decreases.
the potential difference across two plates is 1.50 V. if the plates are 8.22*10^-4 m apart, what is the electric field between them?
Answer: 1820
Explanation:
acellus
HELP PLS ILL GIVE U BRAINLIST
Which of the following is NOT a term used to describe the conductivity of materials ?
A: Semi Insulator
B: Insulator
C: semiconductor
D: conductor
B. insulator
hope this was helpful
Answer:
B. Insulator
Explanation:
Cant conduct heat or electricity?
Please tell the answer..
[tex] \huge \boxed{ \mathbf{Answer࿐}}[/tex]
The correct option is : C.
____________________________________________________________________________________
Displacement is the shortest distance covered by an object to reach the destination from the starting point . so it can be both positive and negative.
____________________________________________________________________________________
[tex] \mathrm{ \#TeeNForeveR}[/tex]
WHAT IS THE ANSWER TO DURING THE MOTION OF A WHEEL ALONG THE ROAD , VELOCTY HAS HOW MANY COMPONENTS CHOOSE ( 1,2,3) OR (ANY NUMBER)
Explanation:
The car's rate of change of position is decreasing. The car is moving but its rate of position increase is coming down. The car will eventually come to a brief stop and begin traveling backward.
how does add it in enhance the rate of reaction ? explain in short.
Reactant concentration, the physical state of the reactants, and surface area, temperature, and the presence of a catalyst are the four main factors that affect reaction rate.
Radio waves are a type of______
wave and can travel through space whereas sound waves cannot travel through space because they need to travel through _____
Answer:
I already know the first one is electromagnetic but I don't know the second one sorry
Explanation:
6. An excited dog runs full-speed toward his owner who has just returned home from
school. If he runs north along their driveway for a distance of 45 m and takes 5.2 s to get
there, what is his average velocity?
Please answer in comments with work !!:)
Answer:
v = 8.65 m/s
Explanation:
Given that,
Distance covered by the doge, d = 45 m
Time taken, t = 5.2 s
We need to find its average speed. The total distance covered divided by the total time taken is called the average speed of an object. So,
[tex]v=\dfrac{45\ m}{5.2\ s}\\\\=8.65\ m/s[/tex]
So, the average speed is 8.65 m/s.
A set of data is collected from a simple circuit with a
20 Ω resistor and is represented in the table.
The current at 5.0 V is
A.
The current at 15 V is
A.
Answer:
A. Recall Ohm's Law: V = IR
If V = 45 volts, and I = 5 amps, the R = V/I = 45V/5A = 9Ω
B. We know the potential difference and the resistance, both of which have good units. All we have to do is plug the known values into the equation and solve for the current:
I=15V9Ω
Thus, the electric current is: 1.67A
Answer:
.25
.75
Explanation:
edge
Measuring a liquid's volume indicated the capacity ______ of the holds it. The most common units for expressing liquid volumes are _____ and milliliters.
Answer:
Measuring, comparing and estimating liquid volumes are taught using metric units like liters and milliliters and customary units like quart, pints, gallons and more. Capacity is actually the amount of liquid in the container, which is also the volume of a liquid.
Explanation:
What is force. in your own words
Answer:
force is a push or pull that exerted on a body
Answer:
force is that push or pull on a body that changes or tends to change the state of rest or of uniform motion in a straight line.
Explanation:
hope this helps