Answer:
S1 = V1 t + 1/2 g t^2 distance traveled by ball dropped
S1 = 1/2 g t^2 since ball is dropped and V1 = zero
S2 = -1/2 g t^2 + V2 t height to which ball 2 rises in time t
S1 + S2 = V2 t both balls at same height after time t
t = S / V2 = 21.3 / 31.2 = .683 sec
Check:
S1 = 1/2 g t^2 = 9.8 / 2 * .683^2 = 2.29 m
S2 = 31.2 * .683 - 9.8/2 * .683^2 = 19 m
Total distance traveled = 2.29 + 19 = 21.3 m
If the 10v battery were replaced by a 15v battery would the current through the 70-ohm resistor increase decrease or remain the same?
Answer:
I think it would increase sorry if I'm wrong
A light bulb is basically a resistor that gets so hot that it glows, emitting light. For this tutorial we will assume the resistor in the light bulb is ohmic (that means Ohm's law applies to the resistor). The rate of energy emitted by the light bulb is its output power, commonly referred to as luminosity (brighter means more luminous). Hook up a light bulb to a 5-V battery. Right-click (or control-click) on the light bulb, and change its resistance. How does the brightness of the light bulb depend on its resistance?
A. The brightness of the light bulb is independent of its resistance. It only depends on the voltage of the battery.
B. The light bulb gets brighter as the resistance is increased.
C. The light bulb gets dimmer as the resistance is increased.
Answer:
b
Explanation:
For spring break you are traveling to San Diego. The trip is 1,746.4 miles and the trip takes 20.1 hours. How fast will you be traveling (in miles per hour)?
Answer:
86 mph
Explanation:
brainliest pls
unit conversion - miles/h to metres/s
Answer:
120 miles/h = 53.6448 m/s
Explanation:
1 mile per hour = 0.44704 m/s
120 * 0.44704
= 53. 6448 m/s
How is the amount of oxygen in ocean water affected by temperature?
Answer:
The amount of oxygen in ocean water increases as temperature increases. Sunlight penetrates the top layers of the ocean, so photosynthesis occurs there. Nutrients, minerals, and gases are more available to marine life in the bottom layers of the ocean.
Explanation:
which of the following correctly describes the velocity and acceleration of the object after 4s?
Answer:
C
Explanation:
The acceleration will be negative, as in the problem statement, the upwards direction is defined as positive (the object is shot upwards and has a positive velocity), so immediately, we can eliminate A and B.
You can then use the kinematics equation:
[tex]v=v_o+at[/tex], where
a= -9.8 m/s^2 (acceleration due to gravity)
t= 4 s (time)
v[tex]_0[/tex]= 20 m/s (initial speed)
when you solve, the final velocity is -19.2 m/s, so the velocity is negative (the object is on its way down).
Giải câu 2 của bài tập trên
Answer:
LETTER C IS THE ANSWER
Explanation:
this is my answer
A charged particle of mass m and charge q moving in an electric field e has an acceleration a given by , where q and e are constants. Find.
The acceleration of the particle at the given charge, electric field and mass is [tex]\frac{qE}{m}[/tex].
The given parameters;
mass of the particle, = mcharge of the particle, = qelectric field, = EThe acceleration of the particle is calculated as follows;
Newton's second law : F = ma
Coulomb's force: F = qE
Equate the two forces as follows;
[tex]ma = qE\\\\a = \frac{qE}{m}[/tex]
Thus, the acceleration of the particle at the given charge, electric field and mass is [tex]\frac{qE}{m}[/tex].
Learn more about Coulomb's force here: https://brainly.com/question/15379673
1) In which of these examples is the greatest movement occurring? A) A B) B C) C D) D
Answer:d
Explanation:
The length of a certain wire is kept same while its radius is doubled. What is the new resistance of this wire
Answer:
R = K L / A resistance proportional to length and inversely proportional
to area
R2 / R1 = A1 / A2 = A1 / (4 A1) = 1 / 4
R2 = R1! / 4
Calculate the maximum height a ball reaches when thrown straight up at a velocity of 10m/s
Answer:
5.1m
Explanation:
Use the fourth key equation of accelerated motion
vf^2=vi^2+2aΔd
we know vf is = 0 because that is when the ball reaches it's peak (not going up anymore)
0=vi^2+2aΔd
and we can rearrange for Δd, which is what you need
-vi^2=2aΔd
Δd = -vi^2/2a
Now we can plug in the values
Δd = -vi^2/2a
Δd = -(10m/s)^2/2(-9.8)
Δd = -100/-18.6
Δd = 5.10m
What is the net force on a water bottle?
Answer:
if it is not moving it is zero, like all things that aren't in motion
Explanation:
Answer:
Note that net force on the bottle is zero.
Explanation:
5 differences between mass and weight
Answer:
The mass is essentially "how much stuff" is in an object. ... Weight: There is a gravitational interaction between objects that have mass. If you consider an object interacting with the Earth, this force is called the weight. The unit for weight is the Newton (same as for any other force)
Explanation:
A 36 kg wagon is accelerated across a level surface at 0.9 m/s ^ 2 What net force in Newtons that acts on the wagon ?
Answer:
32.4 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question
mass = 36 kg
acceleration = 0.9 m/s²
We have
force = 36 × 0.9 = 32.4
We have the final answer as
32.4 NHope this helps you
whats the two factors that determine the amount of kinetic energy
Answer: mass and speed.
Explanation: The two main factors that affect kinetic energy are mass and speed. Why? Because the motion of an object depends on how fast it's traveling.
when drawing a scatter diagram, along which axis is the explanatory variable placed? along which axis is the response variable placed?
how would a flashing red light appear as it fell into a black hole?
Answer:
it would be crushed by the weight and force of the red hole so it wouldn't be possible.
but hypothetically, I personally think the darkness will act as a light conductor and color the bright light just how the sun *bright light* covers the light from our phones. even with the brightness up, the lights to bright. but for the black hole, I think it would be that thr dark is too dark so you can't see. like when you look directly at something in the dark and you can't see it. if you look somewhere demi close to it you can though.
It couldn't be done since the red hole would crush it under its weight and force. However, in a hypothetical situation, I believe the blackness will serve as a light conductor and tint the brilliant light similarly to how the sun's bright light shades the lighting from our phones. Even when brightness is increased, the lights are too bright. For the black hole, I believe the problem would be that it is too dark, and you can't see. Similar to when you stare directly at someone in the dark, and you cannot see it. However, you can if you look somewhat nearby.
What is a black hole?A black hole is a sector of spacetime where gravity is so powerful that nothing can leave from it, not even electromagnetic radiation like light. A sufficiently compacted mass can distort time to create a black hole, as per generalized relativity theory. The event horizon is the time when there is no way out. According to general relativity, it has no locally observable characteristics, despite having a significant impact on the outcome and circumstances of an item crossing it.
To know more about Black Hole:
https://brainly.com/question/10597324
#SPJ2
an object that covers more distance in the same amount of time has a higher speed.
true or false
Answer:
true
Explanation:
Answer: its true btw :(
Which of the following statements supports the claim that a planet travels around a star in an elliptical orbit? (1 point)
Every 30 days, the area swept in space by the planet is the same.
Every 30 days, the distance traveled by the planet is different.
Every 30 days, the speed the planet is moving is different.
I only
I and II
II and III
I, II, and III
Answer:
A
Explanation:
if it was in the same place it wold be a pattern which is what is usually seen in orbits
Question 10..help me
Answer:
Go to high ground, as high as possible.
a car traveling at 60m/s accelerates at 2 m/s for 30s.calculate how far it has traveled during this time
Answer:
2,7 km
Explanation:
You should remember from theory that
[tex]s=s_0 + v_0\Delta t + \frac12 a(\Delta t)^2[/tex]. Let's substitute values, remembering that we are interested in the difference in position [tex]\Delta s = s-s_0[/tex]
[tex]\Delta s = 60(30) +\frac12 2 (30)^2 = 2700m[/tex]
Answer:
it's average acceleration is 12 mph
. A student times a car traveling a distance of 2 m. She finds that it takes the car 5 s to
travel the first meter and then another 8 s to travel the second meter. Is the car traveling
at a constant speed? How do you know?
A 800 Kg car and driver accelerates at a rate of 35 m/s/s. What force is necessary to bring the car to a complete stop?
Answer:
Your answer would be 28,000 N (newtons).
Explanation:
We'd simply get this by using the formula:
force = mass × acceleration
The information that we have from the question is that the force is 800 times 35.
Now, all we have to do is multiply 800 by 35, and we have our answer of 28,000 N.
I hope I helped, and a Brainliest is always appreciated! ☺
is there anyone who lives in colorado
Answer:
not me
Explanation:
QUESTION 1:
What orbital pattern do the planets follow?
A circular
B elliptical
C rectangular
Answer:
Planets generally follow elliptical orbits.
The eccentricity describes the ellipticity of the orbit, that is, the departure of an orbit from a circular orbit.
A block weighing 10 newtons is on a ramp inclined at 30° to the horizontal. A 3-newton force of friction acts on the
block as it is pulled up the ramp at a constant velocity. The force applied to pull the box up the ramp acts parallel to the
incline. Draw the FBD for this problem and determine the magnitude of the force applied.
The force applied to pull the box up the ramp acts parallel to the incline is 8N
The force applied to pull the box is expressed as:
[tex]F_N = F_m + F_f[/tex]
Fm is the moving force
Ff is the force of friction
Get the moving force and frictional fice
[tex]F_m = 10sin30^0 = 5N\\F_f = 3N[/tex]
The force applied to pull the box up the ramp acts parallel to the incline = 5N + 3N = 8N
Hence the force applied to pull the box up the ramp acts parallel to the incline is 8N
Learn more here: https://brainly.com/question/17219637
when primary colors are mixed together, they create what?
Answer:
secondary colours yeah
Sebastián midió un trozo de plástico en un momento donde la temperatura era alta, y luego a la noche volvió a medir y no medía lo mismo. ¿Qué pasó?
English:
The piece of plastic most likely cooled.
/
Español:
Lo más probable es que la pieza de plástico se haya enfriado.
Question 11 (5 points)
If a force of 10.8 newtons is applied to an object that has a mass of 4.6 kg, what will
be the object's acceleration?
*Include ABBREVIATED units in your answer
*Round your answer to 1 decimal place
Answer:
2.3 m/s2
Explanation:
F = ma
a = F/m
a = 10.8 / 4.6
a = 2.3 m/s2
I hope this helps.
According to Boyle's law, as volume decreases, pressure ____________ , and as volume increases, pressure ____________ .
Answer:
In chemistry, according to Boyle's law it tells us that the pressure and volume of an ideal gas are inversely proportional. The pressure has an inverse relationship with the volume. As the volume increases two times, then the pressure of the gas decreases two times.
Explanation:
