Answer:
Choose/Pick your topic which is required for your target audience. Do some research and collect the needed information for your selected topic. Organize all important topic related facts & stats in a logical way. Write all your reader’s needs to influence & help them. Make your views unique & specific. Read, Revise, and Repeat. Cross-check the grammatical mistakes & avoid unnecessary & repetitive lines
Hope this helps!!
Answer:
You have to choose a topic which you'd might like. And write about it. Make sure to provide lots of details and make your reasoning very strong to support your topic. Make sure to re-read and edit misinformation. Correct all grammatical errors and as such that do not make sense. Make sure to do great researching on the internet to provide lots of evidence for your chosen topic.
When you use a microwave, what is the main way that heat is transferred?
1. radiation
2. convection
3.conduction
Answer:
the correct answer is 1. radiation
The ratio of the speed of light in a medium to the speed of light in a vacuum
is called its:
A. angle of incidence
B. Snell's Law
C. angle of refraction
D. refractive index
Answer:D.Refractive Indez
Explanation:
It is usually expressed the other way: the ratio of the speed of light in a vacuum to the speed of light in a medium. In that case, it is called the "index of refraction".
You're going for "refractive index", but you've got the ratio flipped over.
Why does steam at 100°c give severe burn than water at 100 c?
Explanation:
Steam will produce more severe burns than boiling of water because steam has more heat energy than water due to its latent heat of vaporisation and additionally latent heat of condensation. Steam and boiling water can exist at varing temperature but it is only correct to assume here that both are at same temperature.
A 60 Watt bulb runs for 60 s. How much work does it do?
If an electron moves in a circle of radius 21 cm perpendicular to a B field of 0.4 T, what are the speed of the electron and the frequency of motion?
Answer:
a)
[tex]v = 4.048 *10^6[/tex] m/s
b)
Angular frequency = [tex]1.92 * 10^7[/tex]
Explanation:
As we know
[tex]v = \frac{qBr}{m}[/tex]
q is the charge on the electron = [tex]3.2 * 10^{-19}[/tex] C
B is the magnetic field in Tesla = [tex]0.4[/tex] T
r is the radius of the circle = [tex]0.21[/tex] m
mass of the electrons = [tex]6.64 * 10^{-27}[/tex] Kg
a)
Substituting the given values in above equation, we get -
[tex]v = \frac{3.2 * 10^{-19}*0.4*0.21}{6.64 * 10^{-27}} \\v = 4.048 *10^6[/tex]m/s
b)
Angular frequency =
[tex]\frac{4.048 * 10^6 }{0.21} \\1.92 * 10^7[/tex]
El diámetro del embolo de una jeringa para inyección mide 1.5 cm. Una enfermera ejerce una fuerza de 2N cuando inyecta a su paciente. Calcule la presión que ejerce el fluido inyectado sobre las venas.
Answer:
Presión = 11111,11 N/m
Explanation:
Dados los siguientes datos;
Diámetro = 1,5 cm a metros = 1,5 / 100 = 0,015 m
Fuerza = 2N
Para encontrar la presión;
En primer lugar, determinaríamos el área del círculo usando la fórmula;
Área del círculo = πr²
Radio = diámetro/2 = 0.015/2 = 0.0075 m
Área de la jeringa = 3.142 * 0.0075²
Área de la jeringa = 3.142 * 0.00005625
Área de la jeringa = 0.00018 metros
Ahora, podemos encontrar la presión usando la fórmula;
Presión = fuerza/área
Presión = 2/0.00018
Presión = 11111,11 N/m
Waldo needs to know how much force to apply in order to move a 4000-kg object at 2 m/S2. Which law should he refer to
Answer:
Newton's second law of motion?
Un atleta tiene en un instante dado una velocidad de 4 m/s. Si a partir de ese instante y durante 2 s adquiere un MRUA con una aceleración de 3 m/s2. Calcula la velocidad que alcanza al cabo de esos 2 s.
Answer:
Velocidad final, V = 8 m/s
Explanation:
Dados los siguientes datos;
Velocidad inicial, u = 4 m/s
Aceleración, a = 2 m/s²
Tiempo, t = 2 segundos
Para encontrar la velocidad final (v), usaríamos la primera ecuación de movimiento;
V = u + at
Sustituyendo en la fórmula, tenemos;
V = 4 + 2*2
V = 4 + 4
Velocidad final, V = 8 m/s
What is the minimum force required to increase the energy of a car by 69 J over a distance of 42 m? Assume the force is constant.
Group of answer choices
0.61 N
69 N
2900 N
1.6 N
110 N
what does heat trapped by pollution cause?
A. Acid rain
B. Decomposition
C. Greenhouse effect
Answer:
C. Greenhouse Effect
Explanation:
The greenhouse effect is caused by heat trapping pollution in the atmosphere.
hence, the force needed to accelerate the 1000kg car by 3m/s2 is 3000N
Answer:
i'll answer your question but follow me first
what type of beetle is this?
2. A hanging wind-chime on a calm day would have kinetic or potential energy?
kinetic
potential
Answer:
it would have potential energy
An object is travelling 15 m/s. How long does it take for it to go 75 m?
Answer:
5 seconds
Explanation:
After the collision, car 1 has a final velocity of 6m/s south. What is the final velocity of car2?
a) 35m/s north
b) 35m/s south
c) 81 m/s north
d) 81 m/s south
How do positive and negative acceleration differ?
Positive acceleration represents an object speeding up; negative acceleration represents an object slowing down.
Positive acceleration moves north or east; negative acceleration moves south or west.
Positive acceleration occurs when there is more velocity than speed; negative acceleration occurs when there is less velocity than speed.
Positive acceleration occurs when an object changes its speed but not its direction; negative acceleration occurs when an object changes both its speed and direction.
Answer:
Positive acceleration moves north and east but negative acceleration moves south and west
A glass falls from a table top and smashes on the floor 0.6 seconds later. How high is the table?
Equations that can be used
Vv=gt, dv=1/2gt^2, t=2d/g.
Answer:
1.8 m
Explanation:
Given: Glass falls from a table, smashes 0.6 seconds later
To find: How high a table is
Formula: Vv=gt, dv=1/2gt^2, t=2d/g
Solution: A table's height is measured from the top of the edge down to the floor. The tables are shown both have a height of 30 inches, which is common for many tables.
Data
t = 0.6sg = 9.81 m/s²d = ?Equation
d = [tex]\frac{1}{2}[/tex][tex]gt[/tex]²Math & Units
d = 4.905 (0.6²)d = 442.676Hence the table is 1.8 m high
How does magnetic compass help to identify directions
Answer:
By the help of magnetic field of the earth
Explanation:
Compasses, also known as magnetic compass, help us primarily in navigating and determine position on the globe. The planet Earth has its own magnetosphere or magnetic field that is close with that of a magnetic poles, and this is how compass works. The compass needle aims north and south as it happens to coincide with the Magnetosphere or magnetic field.
That minimum coefficient of static friction between the tyres and the road that will allow the car that will round safely.
Answer:
The answer is "[tex]0.13562748[/tex]"
Explanation:
Please find the complete question in the attached file.
Using formula:
[tex]\bold{U_s=\frac{v^2}{rg}}[/tex]
Given:
[tex]r=1.60 \times 10^2 \ m\\\\g=9.8\\\\v= 52.5\ \frac{km}{hr}= 14.583\ \frac{m}{s}[/tex]
put the value into the above-given formula:
[tex]U_s= \frac{14.583^2}{160 \times 9.8}[/tex]
[tex]= \frac{212.663889}{1568}\\\\=0.13562748[/tex]
Please answer correctly
No trolling or links, please
Answer: Wave a the first answer is right
Brainliest.
Explanation:
Write 3 rules that describe the possible behaviors that occur when objects with different charges are brought close together
Explanation:
1. attract
2.repel
3. no effect
Expresa en notación científica los siguientes números en notación científica estándar: a) 9367421= b) 7241= c) 0.0005519= d) 0.02=
Answer:
so yeah it is Respuesta
A high diver dives off a platform and strikes the water 1.857 seconds later. Ignoring air resistance, how fast is he traveling as he strikes the water in m/s?
Answer:
The (vertical) speed of the driver as he strikes the water is approximately 18.22 m/s
Explanation:
From the parameters given in the question, we have;
The time after which the driver strikes the water after he drives off a platform, t = 1.857 s
Let 'v' represent the vertical speed of the driver
We can find the vertical speed of the vehicle as it strikes the water as follows;
v = u + g·t
Where;
v = The final vertical velocity of the driver
u = The initial vertical speed of the driver = 0 m/s
g = The acceleration due to gravity ≈ 9.81 m/s²
t = The time of motion = 1.857 seconds
Therefore, we have;
v = 0 + 9.81 m/s² × 1.857 s = 18.21717 m/s
Therefore;
The vertical speed of the driver as he strikes the water, v ≈ 18.22 m/s
How does the strength of a magnetic field around a wire vary?
Answer:
By pointing one's right thumb along the direction of the current, the direction of the magnetic field can by found by curving one's fingers around the wire. The strength of the magnetic field depends on the current I in the wire and r, the distance from the wire.
A jet plane travels east for
661.8 meters in 6 seconds.
What is the velocity of the plane?
velocity = distance = time
3,970.8
Explanation:
v=661.8×6
3,970.8
Two train cars with the same mass (30,000 kg) are traveling in the same direction when they collide.
Train Car A has a velocity of 10 m/s and Train Car B has a velocity of 5 m/s. What is their total
momentum after the collision? Make sure to show all your work and include proper units.
Answer:
25
Explanation:
I just did this
If a chemical reaction has a AH value of -125 kJ, it would be considered what?
A. an exothermic reaction
B. a reaction that absorbs energy
C. an endothermic reaction
D. A reaction that probably gets cold
exothermic
Explanation:
negative means it's losing energy
A student analyzes the data and concludes that one bird flies at a speed of 20 meters per second during a portion of its migration. Select the two types of data that the student needed to form this conclusion
Answer:
The answer is "The location of the bird and time interval between pieces of information".
Explanation:
Please find the complete question in the attached file.
The Radar is the instrument used to gather data from birds by researchers. This would be the primary tool to study the flight behavior of migrating birds with the impact of environmental influences including the ecology of migratory movements, from the broad population group for both the distribution of land areas and geomorphology as well as meteorological systems to the shift in the behavior of airlines of particular birds, especially when responding to lead routes.
If you walk for 1.5 hours at an average speed of 4 miles/hr. How far will you have walked?
If the car goes exits a freeway and goes from 65
mph to 35 mph is it accelerating?
Answer:
No, the car is decelerating
Explanation:
No the car is decelerating if it exits a freeway and goes from 65
mph to 35 mph since the change in velocity is negative.
change in velocity = final - initial
change in velocity = 35 - 65
change in velocity = -30mph
Since the change in velocity is negative, hence the car is decelerating. Deceleration is a negative acceleration