Answer:
ok lol
Explanation:
ok but I will still answer
Answer:daddy
Explanation:
Plzzzz help the question that are selected in the picture r not correct PLZZ help PLZZ give the answer I will mark u the brainliesst
Answer:
D for the first one and A for the second.
Explanation:
Hurricanes are usually caused by warmer waters.
Wind is created due to the movement of air because of the temperatures.
What type of reaction is shown in the following chemical equation: 2H20 - 2H2 + O2?
a
Oь
о Oc
Od
single-displacement
decomposition
double-displacement
synthesis
Answer:
This is a Synthesis Reaction I believe.
Answer:
the reaction is a synthesis reaction
A current of 27 flows through a filament lamp when potential difference of Vis applied across How many electrons will move through the lamp in a time of 1 hour?
Answer:
6.075×10²³ Electrons
Explanation:
From the question,
Q = it............................. Equation 1
Where Q = quantity of charge, i = current, t = time.
Given: i = 27 A, t = 1 hours = 1×60×60 = 3600 seconds.
Substitute these values into equation 1
Q = 27×3600
Q = 97200 C.
If, one electron = 1.6×10⁻¹⁹ C,
Therefore, n electron = 97200×1/1.6×10⁻¹⁹ C.
n = 6.075×10²³ Electrons
When a 4-kg ball is thrown upwards at 40 m/s, at what
height is the potential energy equal to the kinetic
energy
Answer:
the height of the potential energy is 3,200 J
Explanation:
The computation of the kinetic energy is shown below:
Kinetic energy = 1 ÷ 2 × mass × velocity^2
= 1 ÷ 2 × 4 kg × 40 m/s^2
= 3,200 J
Hence the height of the potential energy is 3,200 J
Suppose A = B"Cm, where A has the dimensions LT, B has dimensions L²T-1, and C has dimensions LT2. Then the exponents n and have the values
Complete Question:
Suppose [tex]A = B^n C^m[/tex], where A has the dimensions LT, B has dimensions L²T⁻¹, and C has dimensions LT². Then the exponents n and m have the values
Answer:
The value of n = ¹/₅
The value of m = ³/₅
Explanation:
Given dimensions;
A = LT
B = L²T⁻¹
C = LT²
The values of n and m are calculated as follows;
[tex]LT = [L^2T^{-1}]^n[LT^2]^m\\\\L^1T^1 = [L^{2n}T^{-n}]\times [L^mT^{2m}]\\\\L^1 \times T^1 = [L^{(2n+m)}] \times [T^{(-n +2m)}]\\\\1 = 2n + m -----(1)\\\\1 = -n + 2m ----(2)\\\\from \ (1); \ m = 1-2n, \ \ substitute \ the \ value \ of \ m \ in\ (2)\\\\1= -n +2(1-2n)\\\\1 = -n + 2-4n\\\\1-2 = -5n\\\\-1 = -5n\\\\1= 5n\\\\n = \frac{1}{5} \\\\m = 1 - 2n\\\\m = 1 - 2(\frac{1}{5} )\\\\m = 1- \frac{2}{5} \\\\m = \frac{3}{5}[/tex]
why can many ecosystems exit in one biome?
Answer:
Plants and animals that live in a biome must be able to live and reproduce in the conditions
Explanation:
The net force of a heavy, stationary box is?
Answer:
gravity
Explanation:
Spherical mirror is a
Answer:
Spherical mirror is a mirror with a curved reflecting surface.
There are two spherical mirrors -
Concave andConvexConcave Mirror - A spherical mirror , whose reflecting surface is curved inwards , that is , faces towards the centre of the sphere , is called concave mirror.
Cnovex Mirror - A spherical mirror whose reflecting surface is cirved outwards is called convex mirror.
Explanation:
Points of difference :
The reflecting surface of the concave mirror is bulged inwards . But the reflecting surface of the convex mirror is bulged outwards.Concave mirror produces real and inverted images ( except when the object is placed between F and P , concave mirror produces virtual and erect image ) . But is convex mirror always produces virtual and erect images.The image formed by the concave mirror may be enlarged or diminished, according to the position of the object. The image formed by convex will be always diminished.20 A measure of the speed and direction of an object's motion
a. velocity
b. speed.
c. momentum
How does convection current helps cooling the system of engines
What made ancient Rome special?
Answer:
Rome became the most powerful state in the world by the first century BCE through a combination of military power, political flexibility, economic expansion, and more than a bit of good luck. This expansion changed the Mediterranean world and also changed Rome itself.
Explanation:
HELP FAST What is voltage, and what is its relationship to amperage and power?
(10 points)
Answer:
Amperage is the rate of electrical charge per time.
1 amp = 1 coulomb / second
Power is the product of amperage and voltage.
P = IV
Explanation:
please can someone please help me with this!!
i’ll give 15 points!!
Answer:
Explanation:
Time is a major factor in how much force is being applied. so when there are crumple zones. they crumple and that takes a little longer in an impact and hence lowers the forces considerably :) safety first
Which of the following best describes how the ocean convection cycle impacts different climates?
A by creating different sea levels
B by adding moisture to the atmosphere
by transferring heat from the tropics to the colder climates
by transferring plankton and other sea organisms from cold regions to warm regions
Answer:
Its C
Explanation:
I looked it up and it said that it tranfers heat to the land.
A box moves 1000 m horizontally as a force F 2000 N is applied downward. What is the work done on the box by F during the displacement?
Answer:
D. OJ
Explanation:
A bicycle has a momentum of 25.00 kg·m/s and a velocity of 2.5 m/s. What is the bicycle’smass?
Answer:
10 kg
Explanation:
p=ma
25=2.5m
m=25/2.5
m=10 kg
mark as brainliest plzzzzz
A 4400 Kg Track Travelling at Intial speed 52m\s can be stopeed in 42 sec. By Gently Break , also the track can be stoped in 7.6 m\s if the driver hit the wall
Answer:
-4,651.42N
Explanation:
Since we are not asked what to find, we can calculate the force applied by the track as shown;
F = ma
F = m(v-u)/t
Substitute the given value
F = 4400(7.6-52)/42
F = 4400(-44.4)/42
F = -4,651.43N
Hence the required force is -4,651.42N
charge is moving in a magnetic field that points to the left. What direction can the charge move and experience no magnetic force? Check all that apply
Answer:
The answer is "left"
Explanation:
The electric charge was its material property when it has fewer ions in its atoms than protons. There would be a negative charge of electrons as well as a positive electrode for such protons. Although Material contains more electrons than protons, if Material contains fewer electrons than protons, it is positively charged. An electrical charge is a loading motion, so it forms a current if the loads will move from an insulator, that's why the above given choice is correct.
Answer:
up, left, and into the screen.
Explanation:
Two charged balls are 10 cm apart. One is positively charged, and the other is negatively charged.
Explain how the electric field and/or force would change if both balls had positive charge.
Answer:Explanation: The field lines of the electric charges extend from the positive to negative side charge. ... The force between the two charged balls is attractive. It is directly proportional to the product of their charges and inversely proportional to the magnitude of the distance between them.
Explanation:
hope this helps
In a free body diagram all the forces are depicted as pointing _______ the central box
Answer:
There are three forces acting upon the system - the gravity force (the Earth pulls down on the 15.0 kg of mass), the normal force (the floor pushes up on the system to support its weight), and the applied force (the hand is pushing on the back part of the system).
Explanation:
Answer:
what he said
Explanation:
Convert 75kg to joules
A car and driver weighing 6900 N passes a sign stating “Bridge Out 26.6 m Ahead.” She slams on the brakes, and the car decelerates at a constant rate of 10 m/s2 .
The acceleration of gravity is 9.8 m/s2 .
What is the magnitude of the work done stopping the car if the car just stops in time to avoid diving into the water?
Answer in units of J.
Answer:
187286 J
Explanation:
Lets work backwards. We are trying to find work, and are given kinematic variables. We know that the W = Fd, and since we already have d, all we need to find is F.
Using F = ma:
We know [tex]mg = W = 6900[/tex], and so solving for m, we get 704.082kg.
Now we can plug in the decelleration of the car with the mass in order to find the force against the car(by the brake).
[tex]F = 704.082*(-10) = -7040.82[/tex]
Now plugging this into W = Fd, we get:
[tex]W = (7040.82)*26.6 = 187286J[/tex]
This is just the magnitude, but if you wanted to find the sign of W, you would use the fact that the force is going in the opposite direction of the car, so work would be negative. However, this question asks only for the magnitude, so we ignore the final sign.
a horizontal string is stretched between two points a Distance 0.80 metre apart the tension in the string is 90 Newtonand it is mass is 4.5 g calculate the wavelength and frequency of the three lowest frequency modes of vibration of the string
Answer:
a) v = 126.5 m / s, b) λ₁ = 1.6 m, λ₂ = 0.8 m, λ₃ = 0.533 m, f1 = 79 Hz,
λ₂ = 0.8 m, f₃ = 237 Hz
Explanation:
This is an exercise we are going to solve in parts, let's start by looking for the speed of the wave in the string.
v = [tex]\sqrt { \frac{T}{ \mu } }[/tex]
the rope tension is T = 90 N and the density can be calculated
μ = m / l
let's calculate
μ = 4.5 10⁻³ / 0.80
μ = 5.625 10⁻³ kg/m
let's calculate the speed
v = [tex]\sqrt{ \frac{90 }{5.625 \ 10^{-3}} }[/tex]
v = 126.5 m / s
For the second part there is a process of resonance in the string. The points where it is attached are nodes so, if L is the length of the chord
L = ½ λ 1st harmonic
L = 2/2 λ 2nd harmonic
L = 3/2 λ 3rd harmonic
L = n/2 λ n harmonic
the wavelength of the first three harmonics is requested
let's calculate
λ₁ = 2L
λ₁ = 2 0.8
λ₁ = 1.6 m
λ₂ = L
λ₂ = 0.8 m
λ₃ = ⅔ L
λ₃ = ⅔ 0.8
λ₃ = 0.533 m
To calculate the frequency we use that the speed is related to the wavelength and the frequency
v = lam f
f = v / lam
we calculate
f1 = 126.5 / 1.6
f1 = 79 Hz
f2 = 126.5 / 0.8
f2 = 158 Hz
f3 = 126.5 / 0.533
f3 = 237 Hz
A saw blade, starting at rest, accelerates at 27 rad/s^2 for 5.0 seconds
a. What angular speed will the blade have at the end of the 5.0 seconds
b. If the blade continues at the speed that was reached in part a, through what angle will the blade have rotated in another 5.0 seconds
A machine applies a force of 100 newtons over a distance of 10 meters to raise a 500 newton
drum 1.5 meters. What is the work input?
Explanation:
work input is the work done by the machine in lifting the drum = Force × distance
100N × 10m
= 1000 J
An example of any movement showing at least four different energy transformations
1) Radiation from the sun can be deflected or contained by
(a) wearing dark colored clothes
(b) wearing light colored clothes
(c) wearing no clothes
(d) wearing blue jeans
The subject is science: Heat Energy
Answer:
b
Explanation:
light colors deflect ligjt
Help ASAP I’ll give u branliest!! This isn’t really hard
Answer:
I'm pretty sure it's mist, drizzle, droplet, and then rain.
what’s the answer ???
Answer:
i cant even see it
Explanation:
"I could feel his anguish" what could be the anguish
Answer:
yeah
Explanation:
the answer is right.