P=40 W
U=120 V
R=?
P=U*I
I=U/R
P=U²/R
R=U²/P
R=120²/40
R= 360 Ω
By applying the principle of moments, find the value of F2
Answer:
bla bla bla
Explanation:
it will give the people who answer the points or brainliest!
Directions: Complete the concept map using the terms listed below.
pushes and pulls
Newton's Laws
inertia
acceleration
unbalanced
mass
pairs
gravity
1.
and
forces
such as
when they are
7.
2.
they
generate
which is a
force of
attraction
motion
can be measure by
between two
objects with
3.
4.
8.
describes
which is a
measure
of
relates force,
mass and
describes
forces in
5.
6.
Answer:
this is confusing
Explanation:
What conditions would you expect to find during an effusive eruption?
Answer:
Effusive eruptions occur when hot, (1200oC) runny basalt magmas reach the surface. Dissolved gases escape easily as the magma erupts, forming lava that flows downhill quite easily. Effusive eruptions build up gently-sloping Shield Volcanoes like Hawaii.
A student is given a sample of matter and asked to determine whether it is an element.
An object initially traveling at 20.0 m/s south decelerates uniformly at 6.00 m/s2 and is displaced 25.0 m. What is the final velocity of the object? (magnitude and direction)
Answer:
50.37 m/s and 40ms object
PHYSICSSS PLEASE HELP
Answer:
1. 10.5 Kg
2. s/g
Explanation:
1. Determination of the mass of gasoline
Density of gasoline = 0.7 Kg/L
Volume of gasoline = 15 L
Mass of gasoline =?
The density of a substance is simply defined as the mass of the substance per unit volume of the substance. Mathematically, the density of a substance can be expressed as:
Density = mass / volume
With the above formula, we can obtain the mass of the gasoline as follow:
Density of gasoline = 0.7 Kg/L
Volume of gasoline = 15 L
Mass of gasoline =?
Density = mass / volume
0.7 = Mass of gasoline / 15
Cross multiply
Mass of gasoline = 0.7 × 15
Mass of gasoline = 10.5 Kg
2. Density has various units some are listed below:
I. Kilogram per litre (Kg/L)
II. Kilogram per cubic metre (Kg/m³)
III. Milligram per millilitre (mg/mL)
IV. Gram per millilitre (g/mL)
V. Gram per cubic centimetre (g/cm³)
Considering the options given in the question above, it is evident that second per gram (s/g) is not a unit of density because density is mass per unit volume.
The half-life of radium-226 is 1600 years. How many
grams of a 7 g sample will remain after 3200 years?
SHOWALL STEPS TO SOLVE THE PROBLEM
Answer:
1600 years half life
3200/1600 is 2 half lifes
first half life takes the sample to 1/2 it's original amount and the second takes it to 1/4 of it's original amount
so 1/4*7gm is 1.75gm
Explanation:
This pendulum is at
minimum displacement
maximum displacement
equilibrium
Answer:
EquilibriumExplanation:
The pendulum is at rest ( or balance due to the equal action of opposing forces).
Answer:
Equilimbru or maximum displacement is question.
Helicopters are most different from airplanes in that:
A. Helicopter pilots mostly use their own vision to navigate.
B. Any significant disturbance in a helicopter system means the helicopter stops flying immediately.
C. They are each used for completely different tasks.
D. Helicopters are significantly safer to fly.
Ek = 12 x m X v2. Re-arrange to give an equation for:
a) The mass m.
b) Velocity squared v2.
c) Velocity.
Answer:
a) [tex]m = \frac{2\cdot E_{k}}{v^{2}}[/tex], b) [tex]v^{2} = \frac{2\cdot E_{k}}{m}[/tex], c) [tex]v = \sqrt{\frac{2\cdot E_{k}}{m } }[/tex]
Explanation:
a) Translational kinetic energy ([tex]E_{k}[/tex]), measured in joules, is represented by the following expression:
[tex]E_{k} = \frac{1}{2}\cdot m \cdot v^{2}[/tex] (1)
Where:
[tex]m[/tex] - Mass, measured in kilograms.
[tex]v[/tex] - Velocity, measured in meters per second.
Now we clear the mass within the formula:
[tex]E_{k} = \frac{1}{2}\cdot m\cdot v^{2}[/tex]
[tex]2\cdot E_{k} = m\cdot v^{2}[/tex]
[tex]m = \frac{2\cdot E_{k}}{v^{2}}[/tex]
b) Now we clear the velocity squared:
[tex]v^{2} = \frac{2\cdot E_{k}}{m}[/tex]
c) Now we clear the velocity:
[tex]v = \sqrt{\frac{2\cdot E_{k}}{m } }[/tex]
Question 1 of 10
Which situation represents the highest entropy of a deck of playing cards?
O A. In four piles, organized by suit
B. Stacked in a deck
C. In order of face value
D. Scattered over the ground
SUBMIT
Answer:
D.
Explanation:
Entropy is the measurement of disorder in a system. The greater the entropy the more disorder/mess there is. Options A B and C all have organized systems so D is the only one with the least orderly scenario
Scattered over the ground represents the highest entropy of a deck of playing cards.
What is entropy?Entropy is a thermodynamic quantity representing the unavailability of a system's thermal energy for conversion into mechanical work, often interpreted as the degree of disorder or randomness in the system.
Entropy is the measurement of disorder in a system. The greater the entropy the more disorder/mess there is. Options A,B and C all have organized systems so, D is the only one with the least orderly scenario
Hence, the option D is correct.
Learn more about entropy here:
Lhttps://brainly.com/question/24278877?referrer=searchResults
What are the first two of Newton's Laws of Motion?
Answer:
In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration.
Explanation:
describe nucleus (animal) in your own words(20 points)
Answer:
The nucleus is a highly specialized organelle that serves as the information and administrative center of the cell. ... Most of the nuclear material consists of chromatin, the unstructured form of the cell's dna that will organize to form chromosomes during mitosis or cell division.
Explanation:
Which of the following describes a planet?Burning ball of gases that emits its own light
Large body of rock that revolves around the sun
Large, round body that revolves around a star
Round object that revolves around a moon
Answer:
Think the last one
Explanation:
6 A textbook sitting on a table weighs 3.6 N. If you push straight down on the book with a force of
84 N. what is the force acting on the book?
Which of the following is an example of chemical change?
A. Filling up a balloon with hot air.
B. Taking a glass of water and freezing it by placing it in the freezer.
C. A plant collecting sunlight and turning it into food.
D. Your dog ripping up your homework.
Answer:
c
Explanation:
all the others r physical
A moving sidewalk has a velocity of 1.3 m/s north. If a man walks south on
the sidewalk at a speed of 0.9 m/s, how long does it take him to travel 20 m
relative to a stationary observer?
O A. 21.9 s
O B. 15.4 s
O C. 33.3 s
O D. 50.0 s
Please please help!!!
What is the mass, in grams, of 2.00 moles of H2O?
Answer:
36g
Explanation:
Given parameters:
Number of moles of H₂O = 2moles
Unknown:
Mass of H₂O = ?
Solution:
To solve this problem, use the expression below:
Mass of H₂O = number of moles x molar mass
Molar mass of H₂O = 2(1) + 16 = 18g/mol
Mass of H₂O = 2 x 18 = 36g
why malleability is a useful property
Do not understand, need help doing this
Answer:
I found it would be quadrupled if it was doubled
Explanation:
The kinetic energy of an object is the energy possessed by the object due to its motion. It is given by:
where
m is the mass of the object
v is its speed
From the equation, we notice that the kinetic energy is:
Directly proportional to the mass
Proportional to the square of the speed
In this problem, the initial kinetic energy of the object is
K = 100 J
Later, the speed of the object is doubled:
v' = 2v
Therefore, the new kinetic energy will be
So, we see that the kinetic energy will quadruple.
True or False Heat is the measure of the flow of thermal energy. *
True
False
Answer:
True
Explanation:
Answer:
that is very much true im pretty sure
(edit I was wrong its false)
Flag In reaching her destination, a backpacker walks with an average velocity of 1.34 m/s, due west. This average velocity results because she hikes for 6.44 km with an average velocity of 2.68 m/s, due west, urns around, and hikes with an average velocity of 0.447 m/s, due east. (a) How far east did she walk? (b) If she did not turn around and walked due east, how many hours would it take her to reach her destination with an average velocity of 1.34m/s due west?
Answer:
[tex]s_2=-806m[/tex]
Explanation:
From the question we are told that
Velocity 1 [tex]v=1.34m/s \angle west[/tex]
Distance [tex]d=6.44km=>6440m[/tex]
Velocity 2 [tex]v_3=2.68m/s[/tex]
Velocity 3 [tex]v_3=0.447m/s \angle east[/tex]
Generally the equation for VT is mathematically given by
[tex]VT=v_1t_1 +V_2t_2[/tex]
[tex]VT=2.68(2400)-0.447t_2[/tex]
[tex]1.34t_1+1.34t_2=2.68(2400)-0.447t_2[/tex]
[tex]t_2=1804s[/tex]
Therefore
[tex]s_2=v_2t_2=(-0.447)(1804)[/tex]
[tex]s_2=-806m[/tex]
Which is a testable hypothesis involving an independent and dependent
variable?
O A. The atmosphere contains different gases.
O B. The properties of solids differ from the properties of gases.
O C. Gold is a solid a room temperature.
OD. If gold reaches a high enough temperature, it will become
liquid.
HELP NEEDED
Answer:
i think od maybe
Explanai tion:
Using humor can be strategic to stop bullying when it is hapoingjng true or false
Calculate the running costs of a filament lamp with a 60 W bulb and a CFL lamp with a 15 W bulb for 15 hours.
1 kWh costs 10p.
cost = power (kW) × time (hours) × price (per kWh)
Answer:
the cost of running the bulbs is 11.25p
Explanation:
Given;
cost of running 1 kwh = 10 p
power of filament bulb, P = 60 W
power of the CFL bulb, P = 15 W
time of power consumption, t = 15 hours
Total Energy consumed;
E = (60W + 15W) x 15 hours
E = (75)(15)
E = 1125 Wh
E = 1.125 kWh
Cost of 1.125 kWh = 1.125 x 10p
= 11.25p
Therefore, the cost of running the bulbs is 11.25p
Cyclist 1 pedals 40 kilometers east in 2 hours. Cyclist 2 pedals 10 kilometers west in half an hour. Based on this information, which statement about cyclists is correct?
Answer:
See Explanation
Explanation:
Given
Cyclist 1:
[tex]Distance = 40km[/tex]
[tex]Time = 2hr[/tex]
[tex]Direction = East[/tex]
Cyclist 2:
[tex]Distance = 10km[/tex]
[tex]Time = 0.5hr[/tex]
[tex]Direction = West[/tex]
The question requires options. Since none is given, I'll answer on a general term.
First, calculate the speed of both cyclists
[tex]Speed = \frac{Distance}{Time}[/tex]
Cyclist 1:
[tex]Distance = 40km[/tex]
[tex]Time = 2hr[/tex]
[tex]Speed = \frac{40km}{2hr}[/tex]
[tex]Speed = 20km/hr[/tex]
Cyclist 2:
[tex]Distance = 10km[/tex]
[tex]Time = 0.5hr[/tex]
[tex]Speed = \frac{10km}{0.5hr}[/tex]
[tex]Speed = 20km/hr[/tex]
The following can be deduced from above:
Both cyclists travel at the same speed of 20km/hrBoth cyclists travel in opposite directions
2) If you have a saran wrap that has a neutral charge how many excess electrons does it have?
Zero, neutral means no extra electrons.
Beyonce weighs 500 N and is sitting at one end of a see-saw which is 4 m long and balanced in the middle. Jordan is 2000 N. Where should she sit in order to balance the see-saw?
Answer:
11 moments docx has the answer
Explanation:
U must pay money to get through it
I need help immediately and thank you of if you answer the question
Answer:
c. Position C
Explanation:
As the magnetic force is the strongest at the end of the poles and it decreases when it comes to its centre.
Can someone help me answer this question