Answer:
EXERCISE
It is very useful than diet and better than diet. All cannot do diet also exercise some of them will do but if we do exercise it is very helpful for health but diet is not much helps regular exercise helps body fitness and health it will burn fat fast if we do regularly or else no and if we do exercise even our face glows naturally. Morning exercise helps to refresh our mind and our full day will be active.For me EXERCISE is better than diet
Convert time from 12-hour to 24-hour clock. 3 am
Answer:
03:00
Explanation:
12 HOUR CLOCK 24 HOUR CLOCK
12:00 AM 00:00
01:00 AM 01:00
02:00 AM 02:00
03:00 AM 03:00
04:00 AM 04:00
05:00 AM 05:00
06:00 AM 06:00
07:00 AM 07:00
08:00 AM 08:00
09:00 AM 09:00
10:00 AM 10:00
11:00 AM 11:00
12:00 PM 12:00
01:00 PM 13:00
02:00 PM 14:00
03:00 PM 15:00
04:00 PM 16:00
05:00 PM 17:00
06:00 PM 18:00
07:00 PM 19:00
08:00 PM 20:00
09:00 PM 21:00
10:00 PM 22:00
11:00 PM 23:00
A toy car of mass 1.2 kg is driving vertical circles inside a hollow cylinder of radius 2.0m. It is moving at a constant speed of 6 m/s. a) Calculate the magnitude of the normal force acting on the car when it is on the top of the circle and when it is on the bottom of the circle, respectively. b) What is the minimum speed the car needs to go around the circle without falling off
Answer:
a)[tex]|N|=9.83\: N[/tex] at the top
[tex]|N|=33.37\: N[/tex] at the botton
b) The minimum velocity will be [tex]v=4.43\: m/s[/tex].
Step-by-step explanation:
a) Using the second Newton's law, at the top of the circle we have.
[tex]\Sigma F=ma_{c}[/tex]
The forces at the top are the weight and the normal force.
[tex]W-N=m\frac{v^{2}}{R}[/tex]
[tex]mg-N=m\frac{v^{2}}{R}[/tex]
[tex]N=mg-(m\frac{v^{2}}{R})[/tex]
[tex]N=1.2*9.81-(1.2\frac{6^{2}}{2})[/tex]
[tex]N=-9.83\: N[/tex]
[tex]|N|=9.83\: N[/tex]
At the botton of the circle we have:
[tex]N-W=m\frac{v^{2}}{R}[/tex]
[tex]N-mg=m\frac{v^{2}}{R}[/tex]
[tex]N=1.2*9.81+(1.2\frac{6^{2}}{2})[/tex]
[tex]|N|=33.37\: N[/tex]
b) If we do the normal force equal to zero we can find the minimum velocity, which means:
[tex]W-0=m\frac{v^{2}}{R}[/tex]
[tex]mg=m\frac{v^{2}}{R}[/tex]
[tex]v=\sqrt{Rg}[/tex]
[tex]v=\sqrt{2*9.81}[/tex]
Therefore, the minimum velocity will be [tex]v=4.43\: m/s[/tex].
I hope it helps you!
an oscillator with a mass of 310 g and a period of 0.180 s has amplited that decreases by 20 % during each complete oscillation what is the damping constant
Answer:
1.241/s
Explanation:
From this question, we have the following information:
Mass of oscillator = 310
The time Period, t = 0.180
Decrease = 20 %
Amplitude of oscillation has the formula
A = Aoe^yt
1-20% = 80%
= 0.80
Y x 0.18 = -ln(0.8)
= 0.18Y = 0.2234
Y = 0.2233/0.18
Y = 1.241/s
The damping constant y is Therefore equal to 1.241s
CAN SOMEONE PLEASE HELPPPPPP
Answer:
0.54
Explanation:
2.7÷5 = 0.54
Hope this helps!
A student determines a value for a force using the formula F = k I l.
k is a constant with units of N A-1 m-1
I is current measured in mA
l is length measured in mm
The student uses the numbers directly from each measurement in their calculation.
What will be the units of the force from that calculation?
1 Newton force is equal to the 10⁻⁵ dynes. The unit of force will be dyne and the value of force will be 0.1 dynes.
What is force?
Force is defined as the push or pull applied to the body. Sometimes it is used to change the shape, size, and direction of the body. Force is defined as the product of mass and acceleration.
Its SI unit is Newton, MKS unit is kgm/s² and CGS unit is dyne.
The given formulae are;
F = k I l
k is a constant with unit= N A-1 m-1
I is currently measured in mA = 10⁻³A
l is the length measured in mm= 10⁻³ m
F = k I l
F= N A-1 m-1× 10⁻³A×10⁻³ m
F= 10⁻⁶ N ( 1N = 10⁻⁵ dyne)
F= 0.1 dyne
Hence the unit of force will be dyne and the value of force will be 0.1 dynes.
To learn more about the force refer to the link;
https://brainly.com/question/26115859
Need help with this pleases
Does solar/light energy explain why/how thing keep going?
O Yes, solar/light energy can convert into other kinds of energy that makes things go, such as TE, ELE, and CE
O No, solar/light energy canonly power solar panels, so it cannot serve as a source of why things go
.
Answer:
In 1954 modern solar cells were invented at Bell Labs with the intent of powering satellites. For many years solar remained expensive but today prices have come down and solar electricity is everywhere. Our satellites and the Mars rover are solar powered, as are homes, toys, outdoor lighting and solar battery packs to charge our electronic devices. Importantly solar electricity is bringing light to the one billion people around the world who live without power. Often these solar lights are replacing kerosene or candles as light sources in the home. Let’s look at some frequently asked questions about solar lights and how they are changing the world.
What are solar lights made of? Solar lights are made up of four main components: the solar photovoltaic (PV) panel, battery, control electronics and the light fixture. When the sun is out, a solar panel takes the light from the sun and produces electrical energy. The energy can then be used immediately or stored in a battery. The goal of most solar lights is to provide power at night, so they will definitely contain a battery, or be capable of attaching to a battery. The battery itself may not need to have a large capacity, due to the availability of solar energy, but it should be long lasting to account for difficulties replacing batteries in many places across the globe.
The advent of the Light Emitting Diode (LED) for the light fixture has drastically reduced the capacity needs of both the solar panels and the batteries. They use significantly less energy than other types of lighting, so the solar panel and battery can be smaller (more transportable and less expensive). The control electronics are required to move the energy around the system, keep the system safe, and potentially switch on or off your light, depending on the level of light it’s exposed to. Solar lights made for outdoor lighting will often turn on automatically when it gets dark outside. Some solar lights made for reading will turn off during daylight hours to preserve the solar charge, but won’t turn on until they are powered on by a user.
How is solar energy produced? Let’s look a little more deeply into the science behind solar electricity. Solar energy is produced due to the photovoltaic effect. A photovoltaic panel (also known as solar cell) converts sunlight into electrical energy. The solar cell is made up of multiple layers of crystalline silicon and chemicals that create layers of negatively-charged electrons and positively-charged spaces. When light passes through the solar cell, it excites the negatively-charged electrons and pushes them into the positively-charged spaces. Those spaces then transfer the electron stream as direct current of electricity through the wires in the solar cell for use or to a battery where the power is stored until it is needed.
Explanation:
what is the combination of two or more simple machine
Answer:
compound machineExplanation:
A compound machine is a combination of two or more simple machines.
BRAINLIEST? plz
why do bees sting i think they do because when the get disturbed they use thier stinger to sting people
What is the kinetic energy of a 2122 kg car parked in a parking lot?
Answer:
There is no kinetic energy.
Explanation:
Since K=1/2mv^2 where m=2122kg and v=0, clearly the car has no kinetic energy as multiplying by 0 results in 0. If the car were moving, there would be kinetic energy.
suppose you want to determine the surface area of this sugar cube. it has edges that are each 2 cm long. if you cut the cube in half what is the surface area of each half? what is the total surface area of both halves
Answer:
Half: 6 cm^2 Whole: 12 cm^2
Explanation:
First, we know that the edges of the cube are 2 cm long. So there are 6 faces on a cube. We do 2x6=12 cm^2 as our total surface area. Then it asks for each half. So you would divide it by 2 and get 6 cm^2 as your half.
A 2.0-kg mass swings at the end of a light string (length = 3.0 m). Its speed at the
lowest point on its circular path is 6.0 m/s. What is its kinetic energy at an
instant when the string makes an angle of 50° with the vertical?
Answer:
Kinetic Energy = 36 Joules
Explanation:
Given =
Mass = 2kg
Velocity = 6m/s
Solution =
Kinetic Energy = 1/2 × mv²
Kinetic Energy = 1/2 × 2 × 6 × 6
Kinetic Energy = 36 Joules
The kinetic energy of the string is 36 Joules.
To find the kinetic energy, the values given are
Mass m = 2 kg
speed v = 6m/s
What is kinetic energy?If an object is in motion, the energy of the object is said to be kinetic energy. The object kinetic energy will be changed unless it has the changes in the mass and speed.
The unit of Kinetic energy is Joules.
Formula for kinetic energy is,
K. E = 1/2 mv²
where, K. E - Kinetic energy
m - mass
v - velocity
Substituting all the values given,
K. E = 1/2 ( 2 × 6² )
= 1/2 × 2 × 6 × 6
= 36 J.
So, the kinetic energy of the string is 36 J.
Learn more about Kinetic energy,
https://brainly.com/question/4080953
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What are some of the physical properties of minerals
Answer:
hardness, luster, color, streak, specific gravity, cleavage, fracture, and tenacity.
Explanation:
doesn't really need one.
Part A Every force has one and only one 3rd law pair force. Every force has one and only one 3rd law pair force. true false Request Answer Part B The two forces in each pair act in opposite directions. The two forces in each pair act in opposite directions. true false Request Answer Part C The two forces in each pair can either both act on the same body or they can act on different bodies. The two forces in each pair can either both act on the same body or they can act on different bodies. true false
Answer:
Explanation:
Part A
Every force has one and only pair force , according to 3 rd law
It is true , the pair force has equal magnitude .
Part B
The two forces in each pair act in opposite directions.
It is true .
The pair forces are equal and act in opposite direction .
Part C
The two forces in each pair can either both act on the same body or they can act on different bodies.
It is false .
The two forces in each pair can not act on same body . They act on different bodies , bodies which are undergoing mutual interaction.
A squirrel pulls a 8.7 kg bag of acorns along the ground with a constant force of 80 N. If the force of friction opposing this sliding is 32 N. what will be the acceleration of the bag of acorns?
Answer:
[tex]a=5.51\ m/s^2[/tex]
Explanation:
Given that,
The mass of a bag of acorns, m = 8.5 kg
The force acting on the bag = 80 N
The force of friction = 32 N
We need to find the acceleration of the bag of acorns.
Net force acting on it is = 80 N - 32 N
= 48 N
Let a be the acceleration of the bag of acorns. So,
F = ma
[tex]a=\dfrac{F}{m}\\\\a=\dfrac{48}{8.7}\\\\a=5.51\ m/s^2[/tex]
So, the acceleration of the bag of acorns is [tex]5.51\ m/s^2[/tex].
How do motion and Newton's laws apply to your everyday life? (all of the laws)
Answer:
This may help
Examples of Newton's third law of motion are ubiquitous in everyday life. For example, when you jump, your legs apply a force to the ground, and the ground applies and equal and opposite reaction force that propels you into the air. Engineers apply Newton's third law when designing rockets and other projectile devices.
Explanation:
What is an indicator that the universe is exapanding?
Answer:
*Doppler effect by the displacement or towards the red
*The microwave temperature of the universe
Explanation:
The expansion of the universe can be visualized in various facts
* the stars and galaxies are moving away from us, this is observed in the Doppler effect by the displacement or towards the red of the hydrogen lines.
* The microwave temperature of the universe that comes from everywhere, this temperature is the rest of the temperature of an initial great explosion (big ban), for which the expanding universe must cool down.
Two different liquids are poured into a jar until it is half full. The jar is then sealed shut and shaken. The liquids undergo a chemical reaction that releases thermal energy and also
emits a new gas into the far. The new gas increases the pressure inside the jar. After the far is sealed, it is an example of an)
Answer:
A closed system.
Explanation:
The three major types of system are: open, closed and isolated. Open system interacts with its surroundings with respect to its particles and energy. A closed system interacts with its surroundings with respect to energy but not its particles. While an isolated system does not interact with its surroundings in any way.
Therefore, after the jar is sealed, it is an example of a closed system. This is because the emitted gas could not escape into the surroundings, but thermal energy was emitted into its surroundings after the chemical reaction has taken place.
3. Two balls are released from the same height. One is released from rest and the other is thrown straight down. Which
will have the larger acceleration as they fall neglecting air resistance?
a. The dropped ball
b. The thrown ball
c.They will have the same accelerations
Answer:
B. The thrown ball
Explanation:
because you are giving the ball a higher force causing the acceleration to be higher
A 55 kg skater spins with a speed of 7.2 m/s with her arms outstretched making a
radius of 0.6 m. Calculate the angular momentum of the skater. *
33 kg m^2/s
0 237.6 kg m^2/s
396 kg m^2/s
660 kg m^2/s
e xddd snoAnswer:n
E
xplanation:s no
How can an electromagnet be made stronger?
A.Add more coils of wire.
B.Add an iron core.
C.All the above.
D.Increase the voltage.
All four choices are correct responses. (A), (B), (C), (D)
What is the correct definition of a 'field vector'?
a) A measurement that must have both a number and a unit
b) A measurement that can only be measured using scientific digits
c)A measurement that has both a magnitude and direction represented with an arrow
d)A measurement that is drawn in as it cannot be seen visually
i think it is c but can someone help me with this?
Answer: Yes the answer is C
Explanation: Look a pictures of field vectors, they are represented with the arrows.
A 30.8 kg box rests on an incline of 13 degrees. What is the normal force, in Newtons, exerted by the incline?
so 30.8/13= is 2.369
so round your ans to I dp which is
2.4d/kg
In the final stages of production, a pharmaceutical is sterilized by heating it from 25 to 75C as it moves at 0.2 m/s through a straight thin-walled stainless steel tube of 12.7-mm diameter. A uniform heat flux is maintained by an electric resistance heater wrapped around the outer surface of the tube. If the tube is 10 m long, what is the required heat flux
Answer:
The answer is "[tex]12682.267\ \ \frac{W}{m^2}[/tex]"
Explanation:
Calculating the mass flow rate of fluid:
[tex]m= \rho AV[/tex]
[tex]= \rho \frac{\pi}{4} D^2\ V\\\\= 100 \times \frac{\pi}{4} \times (0.0127)^2\times 0.2\\\\=0.0253 \ \frac{kg}{s}\\\\[/tex]
Calculating the amount of heat transfer.
[tex]q =m\timesC_p(T_{m,0}-T_{m,i})[/tex]
[tex]=0.0253 \times 4000 (75-25)\\\\=0.0253 \times 4000(50)\\\\=0.0253 \times 200,000 \\\\= 5060 \ W[/tex]
Calculating the required value for heat flux:
[tex]q"=\frac{q}{A_s}[/tex]
[tex]=\frac{q}{\pi DL}\\\\= \frac{5060}{\pi \times 0.0127 \times 10}\\\\= 12682.267 \frac{W}{m^2}\\[/tex]
REALICE UN ANALISIS DEL TEMA, INDICANDO LAS IDEAS PRINCIPALES
Answer:
De cual Tema??? jajaja no se que necesitas
Answer:
El análisis temático es un método de análisis de datos cualitativos. Por lo general, se aplica a un conjunto de textos, como las transcripciones de entrevistas. El investigador examina de cerca los datos para identificar temas comunes: temas, ideas y patrones de significado que surgen repetidamente.
Explanation:
A train takes 2.5 hours to travel 120 kilometers. What is the train's average speed?
A: 0.02 hr/km
B: 48 km/hr
C: 48 hr/km
D: 0.02 km/hr
PLS HELPPP
Answer:
48
Explanation:
The formula is d, time t, and speed or rate of travel r is:
d = rt.
We know that d = 120 km and t = 2 hours and 30 minutes = 2.5 hrs.
So you now plug in for d and t to find r, we get:
120 km = r(2.5 hrs)
divide both sides by 2.5 and we get
120 km/2.5 hrs = [r(2.5 hrs)]/2.5 hrs
120 km/2.5 hrs = r(2.5 hrs/2.5 hrs)
48 km/hr = r(1)
r = 48 km/hr
Speed = (distance covered) / (time to cover the distance)
Speed = (120 km) / (2.5 hr)
Speed = (120/2.5) (km/hr)
Speed = 48 km/hr (B)
A 0.100-kg ball is thrown with a speed of 20.0 m/s at an angle of 30.0° with the horizontal. Find
the momentum of the ball (a) at its maximum height, and (b) just before it strikes the ground.
Answer:
25.0
Explanation:
Assume the ground is uniformly level. If the horizontal component a projectile's velocity is doubled, but the vertical component is unchanged, what is the effect on the time of flight
Answer:
Explanation:
Time of flight = 2 x u sinα / g where u sinα is vertical component of projectile's velocity u .
So Time of flight = 2 x vertical component / g
vertical component = constant
g is also constant so
Time of flight will also be constant .
It will remain unchanged .
a charge Q exerts a 2.4 N force on another charge q.If the distance between the charges is doubled,what is the magnitude of the force exerted on Q by q ?
Find the momentum of an object traveling at 15 m/s if it has a mass of 2. I kg?
Answer:
momentum=31.5
Explanation:
given,
mass(m)=2.1kg
velocity(v)=15m/s
momentum(p)=?
now,
p=mv
p=15×2.1
p=31.5 kgm/s