Answer:
Newton's Second Law of motion
Explanation:
Newton's second law of motion states that 'the rate of change of the momentum of a body is directly proportional to, and in the same direction as, the net force acting on it.' This law applies to the given situation stating that 'a motorcycle can reach a speed of 60mph much faster than a minivan' as the smaller mass accelerates more quickly than the larger. This is because the van would require a more stopping distance as it would be difficult to decelerate due to the heavy mass. While for a motorcycle, it would be much easier to decelerate due to lesser mass. Thus, Newton's second law applies here.
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:
which of the following is not non constant force
A. gravitational force
B. frictional force
C.magnetic force
D. electrical force
Answer:
Frictional force. hope this helps have a good day
Answer:
frictional force
Explanation:
Friction always acts to oppose any relative motion between surfaces. For the simple example of a book resting on a flat table, the frictional force is zero. There is no force trying to move the book across the table, so there is no need for a frictional force because there is nothing for the frictional force to oppose.
As the cloud passes over the building, a lightning strike occurs and a charge of 0.84C flows through the lightning conductor. The charge flows for 3.5 × 10^-5 s.
Calculate the average current in the lightning conductor during this time. State the formula used in your answer
Answer:
I=24,000 Amp
Explanation:
Electric Current
Is a measure of the quantity of charge Q flowing by a point in a time period of t.
The standard metric unit for the current is the Ampere, often abbreviated as Amps or A.
It can be calculated as:
[tex]\displaystyle I=\frac{Q}{t}[/tex]
The cloud generates a lightning strike that releases a charge Q=0.84 C during a time [tex]t=3.5\cdot 10^{-5}\ sec[/tex].
The current is of course, not of a constant value, but an average value can be calculated by using the above formula:
[tex]\displaystyle I=\frac{0.84}{3.5\cdot 10^{-5}}[/tex]
[tex]\boxed{I=24,000\ Amp}[/tex]
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
define engineering in your own words
Answer:
engeenering
Explanation:
how you design or do something with tools or with hand
A Force Of 15 N Is Applied To A Spring, Causing It To Stretch 0.3 M. What Is The Spring Constant For The Particular Spring
Answer:
50 on edge
Explanation:
PLEASE HELP!!! a skateboard rolls down a ramp, starting from rest. after 3seconds, the skateboard’s velocity is 15m/s. what is the acceleration of the skateboarder?
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°
Is anyone a boy here lol?
Answer:
yes there are a lot of boys on this platform
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
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
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)
An object travels at a constant velocity of 15 m/s for 5.0 seconds. How far does it
move during that time?
Answer:
Explanation:
Givens:
v = 15 m/s
t = 5 seconds
d = ??
Formula
d = v*t
Solution
d = 15 * 5
d = 75 m
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:
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:
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.
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:
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.
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:
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
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
What type of energy comes from the motion of tiny particles of matter?
Answer: Heat
Explanation: All matter is made of tiny particles called atoms, molecules and ions. These tiny particles are always in motion – either bumping into each other or vibrating back and forth. It is the motion of particles that creates a form of energy called heat (or thermal) energy that is present in all matter
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 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:
a car on a circular track accelerates from rest. the radius of the track is 0.30km and the magnitude of the constant angular acceleration is 4.5x10-3 rads/s squared. find the centripetal acceleration of the car when it has completed half of a lap.
Answer:
The centripetal acceleration of the car is 50.4 m/s²
Explanation:
Given;
radius of the track, r = 0.3km = 300 m
constant angular acceleration, α = 4.5 x 10⁻³ rad/s²
during half of a lap, θ = π
Determine time of motion
θ = ωt + ¹/₂αt²
π = 0 + ¹/₂αt²
t² = 2π / α
t² = ( 2 x 3.142) / (4.5 x 10⁻³)
t² = 1396.44
t = √1396.44
t = 37.369 s
Determine the angular velocity
[tex]\omega_f = \omega_i + \alpha t\\\\\omega_f = 0 \ + \ 37.369*4.5*10^{-3}\\\\\omega_f = 0.168 \ rad/s[/tex]
Determine the centripetal acceleration of the car
[tex]\alpha _c = \omega^2 r\\\\\alpha _c = 0.168*300\\\\\alpha _c =50.4 \ m/s^2[/tex]
Therefore, the centripetal acceleration of the car is 50.4 m/s²
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:
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.
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.
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.