Answer:
On the surface of the moon the weight of an object points towards the center of the moon and its magnitude is approximately 1/6 the magnitude of its weight on the surface of the earth. The mass of the object, i.e. its resistance to acceleration, is the same everywhere
How are plants propagated using
leaf and leaf-bud cuttings?
how can the movement of energy can be tracked by observing the changes the energy causes to matter
An athlete runs 600 m in 2 minutes and the next 1000 m in 1 minute on the same straight
path. What is his average speed and average velocity?
Answer:
Explanation:
Average speed is found by adding together the total distances traveled by the athlete and divide that total by the total time it took.
Average velocity is vector, which means it includes direction. If the athlete heads one way and then turns around, his displacement might actually be negative! Yikes! Let's look at speed first:
[tex]s=\frac{600+1000}{2+1}=\frac{1600}{3}=533\frac{1}{3}\frac{m}{min}[/tex]
Velocity is the displacements added together divided by the total amount of time it took. The displacement is the same as the distance here, since the athlete did not veer off his straight-path and didn't turn around.
Average velocity = average speed = 533.3 m/min
Determine la inercia rotacional de una varilla de 4 m de largo y 2 Kg de mesa si su eje de rotación esta situado a la mitad de la varilla.
Answer:
I = 2.667 kg m²
Explanation:
The moment of inertia of a body can be calculated by the expression
I = ∫ L² dm
For high symmetry bodies the expressions of the moment of inertia are tabulated, for a rod with its axis of rotation at its midpoint it is
I = [tex]\frac{1}{12}[/tex] m L²
let's calculate
I = [tex]\frac{1}{12}[/tex] 2 4²
I = 2.667 kg m²
Your bike starts with an initial velocity of 1 m/s and you accelerate to 4 m/s in 6 seconds. How far did you travel while accelerating?
Answer:
78 m
Explanation:
Initial v = 1 m/s
a = 4 m/s²
t = 6s
[tex]x = v_{i} t + \frac{1}{2}at^{2} \\x = (1)(6) + \frac{1}{2} (4)(6)^{2} \\x = 6 + 72\\x = 78[/tex]
Which of the following is a part of a constitutional republic
Laws are written by a king
People must obey the president.
People vote for representatives.
People cannot affect the government.
Which of these is true of all simple machines?
A.Input force is always less than output force.
B.Work input is always greater than work output.
C.Work output is always greater than work input.
D.Output force is always less than input force.
What color would my greenish blue fish look like if I had a light blue RGB light tank color?
Answer:
it would look greenish blueish
Explanation:
What is formula for Electrical Power?! (with resistance included in it)
Answer:
V = I × R and the power law equation (formula): P = I × V. P = power
13. Which cart has the greatest inertia?
1. a 1-kg cart traveling at 4 m/s
2. a 2-kg cart traveling at 3 m/s
3. a 3-kg cart traveling at 2 m/s
4. a 4-kg cart traveling at 1 m/s
What is one characteristic of the organization of the Periodic Table?
Atoms of elements with the same electron configuration are organized in columns.
Elements are organized in alphabetical order.
Atoms of elements with the same atomic number are organized in diagonals.
Atoms of elements with the same volume are organized in columns.
Answer:
Atoms of elements with the same electons in the outer most shell they are put in the same group on the periodic table
Which resource would be the best choice to learn more information about studying martial arts?
I think videos help more than books when it comes to martial arts. You can get it on YouTu.be if your teacher doesn't teach you online, in this pandemic.
Answer:
The answer is A.) Dance studio.
Explanation:
See screenshot below
Hope this helps! :D
(Can you mark me brainliest?)
- ❤ 7272033Alt ❤
1. A 2.5 kg led projector is launched as a projectile off a tall building. At one point, as it
is flying through the air it has a velocity of 24 m/s and a height of 14 m.
a) Find the potential energy
b) Find the kinetic energy
c) Find the total mechanical energy
d) Find the potential energy at a height of 8.7 m
e) Find the kinetic energy at that same height. (Hint – the total energy is always the same
as in part c)
f) Find the velocity at that height
g) Find the velocity at a height of 11.6 m
h) At what height would the velocity be 26 m/s?
i) What is the velocity just before it smashes into the ground?
See
Answer:
Explanation:
I got everything but i. Don't know why but it's eluding me. So let's do everything but that.
a. PE = mgh so
PE = (2.5)(98)(14) and
PE = 340 J
b. [tex]KE=\frac{1}{2}mv^2[/tex] so
[tex]KE=\frac{1}{2}(2.5)(14)^2[/tex] and
KE = 250 J
c. TE = KE + PE so
TE = 340 + 250 and
TE = 590 J
d. PE at 8.7 m:
PE = (2.5)(9.8)(8.7) and
PE = 210 J
e. The KE at the same height:
TE = KE + PE and
590 = KE + 210 so
KE = 380 J
f. The velocity at that height:
[tex]380=\frac{1}{2}(2.5)v^2[/tex] and
[tex]v=\sqrt{\frac{2(380)}{2.5} }[/tex] so
v = 17 m/s
g. The velocity at a height of 11.6 m (these get a bit more involed as we move forward!). First we need to find the PE at that height and then use it in the TE equation to solve for KE, then use the value for KE in the KE equation to solve for velocity:
590 = KE + PE and
PE = (2.5)(9.8)(11.6) so
PE = 280 then
590 = KE + 280 so
KE = 310 then
[tex]310=\frac{1}{2}(2.5)v^2[/tex] and
[tex]v=\sqrt{\frac{2(310)}{2.5} }[/tex] so
v = 16 m/s
h. This one is a one-dimensional problem not using the TE. This one uses parabolic motion equations. We know that the initial velocity of this object was 0 since it started from the launcher. That allows us to find the time at which the object was at a velocity of 26 m/s. Let's do that first:
[tex]v=v_0+at[/tex] and
26 = 0 + 9.8t and
26 = 9.8t so the time at 26 m/s is
t = 2.7 seconds. Now we use that in the equation for displacement:
Δx = [tex]v_0t+\frac{1}{2}at^2[/tex] and filling in the time the object was at 26 m/s:
Δx = 0t + [tex]\frac{1}{2}(-9.8)2.7)^2[/tex] so
Δx = 36 m
i. ??? In order to find the velocity at which the object hits the ground we would need to know the initial height so we could find the time it takes to hit the ground, and then from there, sub all that in to find final velocity. In my estimations, we have 2 unknowns and I can't seem to see my way around that connundrum.
A velocity-time graph is plotted showing the motion of a car. If the graph is a curved line, it means that
(a) The car started at rest
(b) Acceleration was constant
(c) Velocity is increasing uniformly
(d) Velocity is changing non uniformly
If the velocity time graph is curved, it then means that the velocity is changing non uniformly.
What is the velocity time graph?The velocity time graph is used to describe the changes in the velocity of a body with time. The slope of the graph is known as the acceleration of the motion.
If the velocity time graph is curved, it then means that the velocity is changing non uniformly.
Learn more about velocity time graph:https://brainly.com/question/11290682
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What current flows through a hair dryer plugged into a 110 Volt circuit if it has a resistance of 25 ohms?
Answer:
Ohm's Law says
V=I⋅R.
A bit of algebra says
I=VR So V= 110V 25 Ω=4.4VΩ=A
I hope this helps,
Explanation:
a machine lifts a 35-kg object 20.0 m in 2.0s. How much power is produced bu the machine to lift the object?
The power is produced by the machine to lift the object is 3430 Watts.
What is power?Power in physics is the quantity of energy that is transported or transformed per unit of time. The watt, or one joule per second, is the unit of power in the International System of Units. Power is also referred to as activity in ancient writings. A scalar quantity is power.
Given parameters:
Mass of the object = 35 kg.
Height: h = 20.0 s.
Time taken = 2.0 s.
work done by the machine = mgh = 35 ×9.8 × 20.0 joule = 6860 joule.
Hence, power of the machine = work done/time = 6860/2.0 Watts = 3430 Watts.
Learn more about power here:
https://brainly.com/question/29575208
#SPJ2
What is the speed of the car relative to the speed of the bicycle
Answer:
The highest speed officially recorded for a bicycle ridden in a conventional upright position under fully faired conditions was 100 km/h (62 mph) by Alale (be mola) over 200 m.
Explanation:
Before the car launches, which objects have stored energy?
Answer:
maybeeeeeeeee launcherrr im not sureee hehe
What the effect positively charged objects and negatively charged objects have on each other
Answer:
often Positive and negative charges balance each other which gives an overall neutral charge. if they are unbalanced then it will result in static electricity.
Help please!
Show the molecular formula and electron structure of the simplest compound that forms with only carbon and hydrogen atoms.
Answer:
Explanation:
Simplest hydrocarbon (something made of carbon and hydrogen only) is Methane [tex]CH_{4}[/tex]
The pelvis bone functions as an attachment point for legs, so the pelvis found in dolphins is .... organ.information about this organ tells us that
It would be C then B
C because vestigial means remnant of something that was once there
B because a pelvic bone is typically found in creatures that walk
A tea kettle is warmed on an electric stove. After a while, water vapor builds inside the kettle and causes a whistle in the lid to make a sound. How does this demonstrate the first law of thermodynamics?
Answer:
The first law of thermodynamics states that the change in the internal energy of a system equals the net heat transfer into the system minus the net work done by the system. This is another way of saying that energy can neither be created nor destroyed, but it can be converted from one form to another form.
A tea kettle that is warmed on an electric stove is receiving heat energy, this heat energy increases the kinetic energy of the water particles in the kettle and makes them to move faster. As time goes on, the water begins to turn into vapors. The heat energy that is released into the system is been used to carry out the work of evaporation and the whistling of the kettle.
Explanation:
If you copy and paste it will give you full credit :)
what is speed of light
[tex] {?} [/tex]
Answer:
[tex]3 \times {10}^{8} m {s}^{ - 1} [/tex]
299 792 458 m / s
Answer:
faster than u
Explanation:
Which genotype has a 50% chance of being inherited
Please help, if u can. i linked the picture down below :)
Answer:
For Parent #1 missing box it's t and for Parent #2 missing box is t
Which of the following produces massive amounts of energy from atoms?
Fission.
Fusion.
Neither.
Both
Answer:
d, both
Explanation:
fission is the process of electrons from atoms coliding into other atoms which releases more electrons and when done right releases lots of energy.
fusion is the process of using intense heat and electromagnetic forces to force electrons to bind to atoms which releases lots of energy
Select the statement which are true for current, voltage and resistance:
A. As resistance increases, current also increases.
B. Current is directly proportional to voltage.
C. As resistance increases, current decrease.
D. If the voltage of a bulb is 12 V, and the resistance is 4 ohms, then the current must be 5 A.
Answer:
B.
Explanation:
Current is directly proportional to voltage and inversely proportional to the resistance.
The statement that is true is:
B. Current is directly proportional to voltage.
and
C. As resistance increases, current decreases.
What is biomass energy?
a. Energy harvested from plant material
b. Energy harvested from recycled petroleum O c. Energy harvested from synthetic oil
d. Energy harvested from wind
Answer:
A.
Explanation:
Biomass energy can be harvested from plants, wood, waste, and living or once living organisms.
~ LadyBrain
Two children are pulling and pushing a 30.0 kg sled. The child pulling the sled is exerting a force of 12.0 N at a 45o angle. The child pushing the sled is exerting a horizontal a force of 8.00 N. There is a force of friction of 5.00 N.
Answer:
okay sooo the weight is: 294 n
the normal force is 286 n
the acceleration is: -0.38 m/s²
Answer:
294 n
286 n
-0.38 m/s²
Explanation:
Qual seria o consumo mensal de energia elétrica de um chuveiro de potência de 7000W quel funciona cerca de 10 minutos por dia??
Answer:
Monthly cost = 35.7
Explanation:
Given the following data;
Power = 7000 Watts
Time = 10 minutes
Number of days = 30 days
Conversion:
60 minutes = 1 hour
10 minutes = 10/60 = 0.17 hours
To find the monthly cost of electricity;
Energy = power * time
Energy consumption = 7000 * 0.17
Energy consumption = 1190 Watt-hour = 1.19 KWh (1 Kilowatts is equal to 1000 watts).
Next, to find cost of monthly energy consumption;
Cost = 1.19 * 30
Cost = 35.7