Answer:
MA = 4
Explanation:
In order to solve this problem, we must use the definition of the ideal mechanical advantage, which tells us that it is equal to the relationship of the inclined distance over the height with respect to the level of the ground
MA = L / h
where:
MA = mechanical advantage
L = Length of the inclined plane = 10 [m]
h = elevation = 2.5 [m]
MA = 10/2.5
MA = 4
I hope y'all can read this I need help
Answer:
its basically on where u live is more hot or cold. Is rain and snow common or uncommon. where is this. is it easier to live or harder to live wherever u live at. list 12 different organisms in the place u live. and one fun fact its basically about what u see where u in the city u live
Which particle is used as a beam to treat cancer? electron neutron proton
Answer:neutron
Explanation:
Because it is similar to the motor neurons
Answer:
Proton
Explanation:
Proton therapy, also called proton beam therapy, is a type of radiation therapy. It uses protons rather than x-rays to treat cancer. A proton is a positively charged particle. At high energy, protons can destroy cancer cells.
define engineering in your own words
Answer:
engeenering
Explanation:
how you design or do something with tools or with hand
1. There is a group of kids playing tee ball in front of your house. If the bat is 5kg traveling with a velocity
of 8m/s, with what velocity will the 1.5 kg ball travel after it is hit by the bat?
Answer: tug vi
Explanation:
Because
An electric current of 0.75 A passes through a circuit that has a resistance of 175 12. According to Ohm's law, what is the voltage of the circuit? O A. 176 V O B. 0.004 V O C. 233 V O D. 131 V
Answer:
15.34 i think
Explanation:
A care package is dropped from an airplane flying at 1000 m above sea level with a velocity of 200 m/s to an island. If it takes the package 15s to fall how far away from the island must the package be dropped?
Answer:
3000
Explanation:
What is one characteristic of the convection inside the sun?
- Cells of circulating gasses called granules
- Thick clouds of dust and gasses
- Large cells of rising and sinking gasses
- Nuclear reactions between hydrogen atoms
Answer: 3- Large cells of rising and sinking gasses
Explanation: Hotter gas coming from the radiative zone expands and rises through the convective zone. It can do this because the convective zone is cooler than the radiative zone and therefore less dense. As the gas rises, it cools and begins to sink again. As it falls down to the top of the radiative zone, it heats up and starts to rise. This process repeats, creating convection currents and the visual effect of boiling on the Sun's surface.
PLZ HELP!!!
Which group benefits most from information being transmitted by electromagnetic waves over cable networks?
A. People who use radios to listen to music
B. People who live far from a transmitting antenna
C. People who live close to cell phone base stations
D. People who have easy access to Wi-Fi
The group benefits that transmitted by electromagnetic waves over cable networks should be option C.
What are electromagnetic waves?It is the waves that are developed since a result of vibrations lies between an electric field and a magnetic field. It is comprised of oscillating magnetic and electric fields. Here the waves should be transmitted over the cable networks should be benefited when the people live close to their cell phones.
Learn more about network here: https://brainly.com/question/14464626
Answer:
Its People who live far from a transmitting antenna
Explanation: I did the quiz
A weight lifter raises a mass of 50kg through a height of 2m. He does this 25 times in one minute. Find his
average power.
Answer:
[tex]average power = 416.67 \: W
[/tex]
Explanation:
[tex]are \: you \: sure \: this \: is \: a \: man \: or \: robot?......haha. \\ the \: average \: power \: is \: given \: by : \\ p_{(a.v)} = \frac{w}{t} \: but \: work \: or \: energy \: expanded \: is \: given \: by : \\ w = \: fs = mgs \: \: therfore, \: p_{(a.v)} = \frac{mgs}{t} \\ note \: the \: followng : \\ p_{(a.v)} = average \: power, \\ w = work \: done \: or \: energy \: expanded, \\ f = force \: due \: to \: gravity \: = weight = mg, \\ s = distance = height = 2m \times 25 \: lifts, \: m = mass = 50kg, \\ \: g \: = \: acceleration \: due \: to \: gavity = 10 {m(s)}^{ - 2} and \: t = time = 60s.
\\ so \: what \: now, ok \: lets \: find \: p_{(a.v)} . \\ p_{(a.v)} = \frac{mgs}{t}= \frac{50 \times 10 \times 50}{60} = 416.66666667 \: watts.[/tex]
A speeding Thunderbird left skid marks on the road that were 76.7 m long when it came to a stop. If the acceleration of the car was -10 m/s2, how fast was the car initially going?
Answer: 39.2 m/s
Explanation:
You can use the kinematic equation:
[tex]v_f^2=v_i^2+2a*d[/tex]
We know the final velocity because it says it came to a stop. So now all we gotta do is plug in.
[tex]0^2=v_i^2+2(-10)(76.7)\\v_i^2=1,534\\v_i=\sqrt{1534} \\=39.166 m/s[/tex]
If you are doing 4 sets of 10 repetitions of air squats you are doing _____ x _____ which equals to _____ air squats
Answer:
4x10=30
Explanation:
You can easily know it's multiplication when you see the sign. It gives you the number but you have to plug it in. So once you plug in the numbers then you should get either 4x10 or 10x4 which means both is equal to 40
Terry rides his bike at a constant speed of 10.3 m/s. If he rides for 10 minutes, how far has he ridden?
Answer:
6180
Explanation:
if he is riding at 10.3 meters per second, and is riding for 10 minuets you multiply 10.3 by 60 for 1 minuet and get 618. Then multiply 618 by 10 for 10 minuets and you get 6180
Answer:
618 of 103
Explanation:
If you do 10.3 x 60 you will get 618
If you do 10.3 x 10 you will get 103
Why is the unit of momentum called derived unit
Answer:
the SI unit of momentum is :- kg.ms-1
and we know that,
kinetic energy = 1/2 mv2
E=p2/2m
p=(2Em)1/2
so the derived units are (J.kg)1/2
Explanation:
if a runner is moving 2.88m/s directly north and accelerating at .350 m/s^2 at an angle of -52.0. At the point in the motion where she is running directly east what is the displacement
Answer:
19.1 m, 52.0°
Explanation:
Given:
v₀ₓ = 0 m/s
v₀ᵧ = 2.88 m/s
vᵧ = 0 m/s
aₓ = 0.350 m/s² cos(-52.0°) ≈ 0.215 m/s²
aᵧ = 0.350 m/s² sin(-52.0°) ≈ -0.276 m/s²
Find: Δx and Δy
First, find time.
vᵧ = aᵧt + v₀ᵧ
0 m/s = (-0.276 m/s²) t + 2.88 m/s
t = 10.4 s
Now find the displacement components Δx and Δy.
Δx = v₀ₓ t + ½ aₓ t²
Δx = (0 m/s) (10.4 s) + ½ (0.215 m/s²) (10.4 s)²
Δx = 11.7 m
Δy = v₀ᵧ t + ½ aᵧ t²
Δy = (2.88 m/s) (10.4 s) + ½ (-0.276 m/s²) (10.4 s)²
Δy = 15.0 m
The magnitude of the displacement is:
d² = Δx² + Δy²
d² = (11.7 m)² + (15.0 m)²
d = 19.1 m
The direction of the displacement is:
θ = atan(Δy / Δx)
θ = atan(15.0 m / 11.7 m)
θ = 52.0°
5. A book is placed on a table. If the book exerts a force of 15 N'on the table,
how much force does the table exert on the book?
A. ON
C. 9.8 N
B. 3 N
D. 15 N
Answer:
D
Explanation:
The table is NOT in motion, so it will remain still. Newton's second law states that for every action, there's an equal and opposite reaction. Therefore, the table must push back the opposite direction(up) with the same force(15N)
What will be the velocity of a train if it covers the distance of 30m in 3 s?
Answer:
Soln:
d=30m
t=3s
now:
v=d/t
=30/3
=10
help i need step by step awnser
Answer:
Gold
Silver
Mixture
Explanation:
Density
The density of an object of mass m and volume V is given by:
[tex]\displaystyle d=\frac{m}{V}[/tex]
We are given the following densities:
Gold: 19.3 gr/cm3
Silver: 10.5 gr/cm3
With the data provided in the table, we can confirm which of the three columns corresponds to gold, silver, or a mix of both.
Calculating the first density: m1=1,930 gr, V1=100 cm3
[tex]\displaystyle d1=\frac{m1}{V1}[/tex]
[tex]\displaystyle d1=\frac{1,930}{100}[/tex]
[tex]d1=19.3\ gr/cm^3[/tex]
This crown is made of gold
Calculating the second density: m2=1,930 gr, V2=184 cm3
[tex]\displaystyle d2=\frac{m2}{V2}[/tex]
[tex]\displaystyle d2=\frac{1,930}{184}[/tex]
[tex]d2\approx 10.5\ gr/cm3[/tex]
This crown is made of silver
Calculating the last density: m3=1,930 gr, V3=150 cm3
[tex]\displaystyle d3=\frac{m3}{V3}[/tex]
[tex]\displaystyle d3=\frac{1,930}{150}[/tex]
[tex]d3\approx 12.9 gr/cm^3[/tex]
Since the value of the density is between gold and silver, this crown is a mixture.
based on the information given, which part of inverstigation 2 is most likely the independent variable
Answer:
The independent variable is the variable that is changing.
Explanation:
I gave you this because you did not give us the work for use to see.
You testify as an expert witness in a case involving an accident in which car A slid into the rear of car B, which was stopped at a red light along a road headed down a hill (Fig. 6-25). You find that the slope of the hill is u " 12.03, that the cars were separated by distance d " 24.0 m when the driver of car A put the car into a slide (it lacked any automatic anti-brake-lock system), and that the speed of car A at the onset of braking was v0 " 18.0 m/s.With what speed did car A hit car B if the coefficient of kinetic friction was (a) 0.60 (dry road surface) and (b) 0.10 (road surface covered with wet leaves)
Answer:
A) 12.08 m/s
B) 19.39 m/s
Explanation:
A) Down the hill, we will apply Newton’s second law of motion in the downward direction to get:
mg(sinθ) – F_k = ma
Where; F_k is frictional force due to kinetic friction given by the formula;
F_k = (μ_k) × F_n
F_n is normal force given by mgcosθ
Thus;
F_k = μ_k(mg cosθ)
We now have;
mg(sinθ) – μ_k(mg cosθ) = ma
Dividing through by m to get;
g(sinθ) – μ_k(g cosθ) = a
a = 9.8(sin 12.03) - 0.6(9.8 × cos 12.03)
a = -3.71 m/s²
We are told that distance d = 24.0 m and v_o = 18 m/s
Using newton's 3rd equation of motion, we have;
v = √(v_o² + 2ad)
v = √(18² + (2 × -3.71 × 24))
v = 12.08 m/s
B) Now, μ_k = 0.10
Thus;
a = 9.8(sin 12.03) - 0.1(9.8 × cos 12.03)
a = 1.08 m/s²
Using newton's 3rd equation of motion, we have;
v = √(v_o + 2ad)
v = √(18² + (2 × 1.08 × 24))
v = 19.39 m/s
If the force being applied to an object is doubled, what will happen to its
acceleration?
Answer:
Acceleration decreases.
Explanation:
Hope this helps you.
Why is science good for democracy
Answer:
Equitable education in a healthy democracy includes science and engineering learning for every student. Great science and engineering education engage student so that they develop the knowledge and intellectual dispositions to make sense of the natural and designed worlds.
Explanation:
During a spacewalks an astronaut lets go of a tool, causing it to float away and bounce off the side of the space shuttle. The astronaut saw
the the tool hit the shuttle but did not hear it hit the shuttle. Why would the astronaut be able to see the tool hit the shuttle but not hear it
hit the shuttle?
FISH
Answer:
In space noone can hear you scream.....
Explanation:
There is no sound in space. Sound, like light or heat, is a wave. However, one major distinction is that, unlike light or heat (radiation), sound needs a medium to travel. Sounds require the presence of molecules or particles to travel from one region to another.
Is anyone a boy here lol?
Answer:
yes there are a lot of boys on this platform
Typically, people think of a lava flow when they think of volcanoes. However, some eruptions are mostly ash and steam released into the atmosphere. This type of volcanic eruption is blamed for causing what is referred to as a "Little Ice Age" starting in the 13th century. The ash and steam blocked the sun's rays causing extreme cold and agricultural difficulty which lead to massive decreases in populations.
Describe how the energy from the sun is vital to life. In your response, be sure to include:
1. The form(s) of energy that the sun provides to the Earth.
2. How energy from the sun is transformed on the Earth.
3. At least two ways humans depend on the sun's energy for survival.
Answer:
number 2
Explanation:
The anther and filament are parts of a flower's:
stamen
petal
pistil
stigma
Chanel has some cotton candy that came in a cloudy shape. She wants to make it more dense. Which describes the candy before and after Chanel manipulated it? The candy before was a cube, and the candy after was a ball. The candy before was compacted, and the candy after was fluffy. The candy before was fluffy, and the candy after was compacted. The candy before was a ball, and the candy after was a cube.
Answer:
The candy before was fluffy, and the candy after was compacted.
Explanation:
By definition, something that is fluffy is something very soft, and when you talk about fluffy food (e.g. cakes, cotton candy) it is food that has a lot of air in it. In this case, the cotton candy originally had the shape of a cloud and was not dense, therefore, it was fluffy.
Something that is compact, it something that is dense, solid and generally small. Since Chanel wanted her cotton candy to be more dense, she compacted it .
Answer:
c
Explanation:
A car decelerates uniformly from 24 m/s to 18 m/s in 3.0 seconds. How far does it travel during this time?
Distance travelled will be = 63 m
What is equation of motion?
These are the equations that describe the behavior of a physical system in terms of its motion as a function of time .
Given : u = 24 m/s
v= 18 m/s
t = 3sec
using equation of motion : v = u + at
18 = 24 + a*3
-6 = 3a
a = -2 m/s^2
using equation of motion : s = u t + 1/2 a (t^2)
s = 24 * 3 + 1/2 * (-2)(9)
s = 63 m
Learn more about equation of motion:
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Which of the following is a correct example of the current in a light bulb?
60 Joules
60 Volts
60 Watts
60 Amperes
Answer:
60 Amperes
Explanation:
current is the main factor, so current is measured in Amperes
1. Newton's 1st Law: A skydiver opened their parachute and now experiences a force of gravity of -450 N (down) and a force of air resistance of +450N (up).
a) What is the net force (sum) acting on the skydiver?
Answer:
HELP WHIT PROJECT PLZZ FOR ALL MY POINTS!!!!!!!!!!! X^X
Answer:
maybe. inv me to slides and I'll try.
Explanation: