Answers
Answer:
I'm pretty sure its the 2nd one.
Related Questions
Why do scientists perform multiple trials of the same experiment?
Answers
Answer:
it's a good idea to do multiple trials, that is, do the same experiment lots of times. When we do multiple trials of the same experiment, we can make sure that our results are consistent and not altered by random events. Multiple trials can be done at one time.
Explanation:
the last one which is to increase the likelihood of accurate experiment results
Explanation:
Which of these describes static electricity?
a temporary charge
a steady charge
plssssssssssssssss answer not in a meen way but correct answers only plssssssssssssssssssssssssssssssssssssssssssssssss answer correctly i will drop a thx and give you brainlest and rate your answer 5 stars if you are correct
Answers
a temporary charge is the right answer
A 50kg bicyclist on a 10kg bicycle speeds up from 5.0m/s to 10m/s. What was the total kinetic energy after accelerating?
Answers
Answer:
Explanation:
Ek=1/2mv^2
m=50+10=60,v=10
Ek=1/2*60*100=3000J
A 65 kg cart travels at a constant speed of 4.6 m/s. What is its kinetic energy?
Answers
Answer:
Explanation:
mass (m) = 65 kg
velocity (v) = 4.6 m/s
Kinetic energy (KE)
= 1/2 * m * v²
= 1/2 * 65 * 4.6²
= 687.7 J
hope it helps :)
Forces act on a box that is initially at rest as shown. Coefficient of friction between the object and the surface is μ=0.1.
If the box' mass is 6kg box and if it is moving with acceleration of 0.4m/s2, what distance will the box travel if it was pushed for 4s?
Answers
Answer:
3.2 m
Explanation:
From the question given above, the following data were obtained:
Coefficient of friction (μ) = 0.1
Initial velocity (u) = 0 m/s
Mass (m) = 6 Kg
Acceleration (a) = 0.4 m/s²
Time (t) = 4 s
Distance (s) =.?
The distance travelled can be obtained as illustrated below:
s = ut + ½at²
s = (0×4) + (½ × 0.4 × 4²)
s = 0 + (0.2 × 16)
s = 0 + 3.2
s = 3.2 m
Thus, the box will travel 3.2 m in 4 s.
A unit used to measure force is a
a. newton.
b. newton-meter.
c. joule.
d. watt.
Answers
Answer:
Newton
Explanation:
Newton's are the standard unit of force.
Which type of reaction is this formula an example of?
CH3OH + O2→CO2 + 2H2O + heat
Answers
Explanation:
This is an exothermic reaction. An exothermic reaction is one which releases heat to the surroundings. When CH3OH reacts with O2, heat is released on the product side of the reaction.
What year did Badminton become a full-medal Olympic sport?
Answers
Answer:
1992
Explanation:
Badminton made its debut as a demonstration sport at the 1972 Olympic Games in Munich. It was not until the 1992 Games in Barcelona that it was officially included on the Olympic programme, with men's and women's singles and doubles events.
why is gravity on earth important
Answers
A long solenoid that has 1,160 turns uniformly distributed over a length of 0.435 m produces a magnetic field of magnitude 1.00 10-4 T at its center. What current is required in the windings for that to occur
Answers
Which is NOT true of electricity?
It allows us to see with candles and kerosene lamps.
Humans did not invent electricity.
It’s a form of energy.
Lightning and thunder are examples of electricity.
plsssssssssss answer correct plss i want correct answers only not in a meen way
Answers
Answer:
option A is correct answer of this question
Explanation:
=> it allows us to see with candles and kerosene lamps
hope it helps
4. If the cooling of magma takes place slowly beneath Earth's surface, the rock is that is formed
is called
a. extrusive igneous rock
b. intrusive igneous rock
c. sedimentary rock
d. metamorphic rock
Answers
(a) The roof of a large arena, with a weight of 290 kN, is lifted by 30 cm so that it can be centered. How much work is done on the roof by the forces making the lift? (b) In 1960 a Tampa, Florida, mother reportedly raised one end of a car that had fallen onto her son when a jack failed. If her panic lift effectively raised 4000 N (about 1/4 of the car's weight) by 5 cm, how much work did her force do on the car?
Answers
Answer:
87000 J ;
200 J
Explanation:
Workdone = mgh
Weight = mg = 290kN = 290 * 1000=290000 N
h = distance = 30 cm = 0.3 m
Workdone = 290000 * 0.3
Workdone = 87000 J
B.)
Workdone = Force * distance
Force = 4000 N
Distance, d = 5 cm = 0.05 m
Workdone by the woman, W = 4000N * 0.05m
W = 200Nm = 200 J
C
D
7
The sun is the original source of
energy for many of our energy
resources
Which energy resource does not
originate from the sun? *
(1 Point)
.
A. Geothermal
B. Hydroelectric
C. Waves
D. Win
Answers
Answer:
geothermal
Explanation:
geothermal energy is the heat energy obtained from within the Earth. Hence not derived from Sun's energy.
Which water on earth is the largest,second to the largest,3rd to the largest,fourth to the largest and 5th to the largest?
Answers
Answer:
Explanation:
There are a total of 5 differen classification for the types of bodies of water that exist on Earth. These 5 would be the following: Oceans, seas, lakes, rivers, and canals. Oceans are the biggest bodies of water on Earth. If we ranked them by their size the ranking would be the following...
Pacific Ocean - being 155,556,651 sq km. in size
Atlantic Ocean - being 76,761,938 sq km. in size
Indian Ocean - being 68,555,923 sq km. in size
Antarctic / Southern Ocean - being 20,327,001 sq km. in size
Arctic Ocean - being 14,055,930 sq km. in size
Which of the following is an example of the transformation of gravitational potential energy into motion energy (kinetic energy)?
Answers
Answer:
c
Explanation:
because a drop of water is falling and that is gravitational potential energy into motion energy
What is the expermintal example of Zeeman effect?
Answers
Answer:
When the spectral lines are absorption lines, the effect is called inverse Zeeman effect.
An instrument that produces an electric current in the presence of
a radioactive substance is called a
a. particle accelerator.
b. Geiger counter.
c. cloud chamber.
d. bubble chamber.
Answers
Answer:
Option B, Geiger counter
Explanation:
1. An astronaut is getting ready to explore. If his mass is 60 kg, what is his weight
on Earth?
Answers
Answer:
The mass of an object is the same on Earth, in orbit, or on the surface of the Moon. ... 1N=1kg ⋅m/s2. 1 N = 1 kg · m/s 2 . ... The gravitational force on a mass is its weight. ...Explanation:
ILY:)Weight= (60 kg) (9.8 m/s2)
Weight= 588
A 1.6-kg ball is attached to the end of a 0.40-m string to form a pendulum. This pendulum is released from rest with the string horizontal. At the lowest point of its swing, when it is moving horizontally, the ball collides with a 0.80-kg block initially at rest on a horizontal frictionless surface. The speed of the block just after the collision is 3.0 m/s. What is the speed of the ball just after the collision?a. 1.5 m/sb. 1.3 m/sc. 2.1 m/sd. 1.1 m/se. 1.7 m/s
Answers
Answer:
a. 1.5 m/s
Explanation:
We will apply the law of conservation of energy in this situation between the initial position and the lowest point of the swing:
[tex]m_{1}u_{1} + m_{2}u_{2} = m_{1}v_{1} + m_{2}v_{2}\\[/tex]
where,
m₁ = mass of ball = 1.6 kg
m₂= mass of block = 0.8 kg
u₁ = initial speed of ball = 0 m/s
u₂ = initial speed of block = 0 m/s
v₁ = final speed of ball = ?
v₂ = final speed of block = 3 m/s
Therefore,
[tex](1.6\ kg)(0\ m/s)+(0.8\ kg)(0\ m/s)=(1.6\ kg)(v_{1})+(0.8\ kg)(3\ m/s)\\\\v_{1} = \frac{2.4\ N.s}{1.6\ kg}\\[/tex]
v₁ = 1.5 m/s
Therefore, the correct option is:
a. 1.5 m/s
What is the difference between temperature and heat???
Also what is calorimeter and Thermometer
Answers
Answer:
Difference between heat and temperature in tabular form
Heat vs Temperature
1.Heat is a form of energy that can transfer from a hot body to a cold body. and Temperature is the degree of hotness and coldness of a body.
2.Heat is the total kinetic energy and potential energy obtained by molecules in an object. and Temperature is the average K.E of molecules in a substance.
3.Heat flows from hot body to cold body. It rises when heated and falls down when an object is cooled down and It has a working ability. It does not have the working ability
.
4.Its SI unit is “Joule” and Its SI unit is “Kelvin”.
5.It is measured by the calorimeter and It is measured by the thermometer
.
6.It is represented by “Q”. and It is represented by “T”.
Explanation:
A calorimeter is an object used for calorimetry, or the process of measuring the heat of chemical reactions or physical changes as well as heat capacity. ... A simple calorimeter just consists of a thermometer attached to a metal container full of water suspended above a combustion chamber.
write each of the following in scientific notation, correct to 2 decimal places.
a. 0.00000123 N
b. 417 000 000 kg
c. 246800 A
d. 0,00088 mm
Answers
Answer:
The scientific notation for the each number is given below:
Explanation:
The scientific notation for the following numbers are:
a. For 0.00000123 N
1.23 × 10^-6
b. For 417 000 000 kg
4.17 × 10^8
c. For 246800 A
2.47 × 10^5
d. For 0.00088m
8.8 × 10^-4
The above represent scientific notations of each numbers
If you lean against a wall, the wall pushes back on you with a weaker force
true
false
Answers
false - (.do not ) if you lean against a wall the wall pushes back on you with a( n) weaker force
Explain how the plants of a tropical rain forest contribute to the characteristic hot, humid weather associated with the area. Use details to support your answer.
Answers
Answer: The atmosphere of trophic rainforest is hot and humid due to high rate of transpiration.
Explanation:
The tropical rainforest is a biome which exhibit rich biodiversity of plants and animals. The average temperatures in this region remain high with warm summer. It remains frost free. The soil is nutrient deficient. Due to hot temperature the rate of transpiration remains high as a result the concentration of the water vapors remain high. This is responsible for increasing the humidity in the atmosphere also this region receives appreciable amount of rainfall annually. The average rainfall range is 200-450 centimeters.
Define electromagnetism
Answers
Answer:
the phenomenon of the interaction of electric currents or fields and magnetic fields.
10. John does 176 J of work lifting himself a distance of 0.40 m. How
much force must John apply to accomplish this?
O 440 m
O 440 J
O 440 N
O 70.4 J
Answers
PLEASEEEE HELP ASAP
What are the two main divisions
of the peripheral nervous system?
A. Muscular Nervous System, Digestive Nervous
System
B. Circulatory Nervous System, Endocrine
Nervous System
C. Somatic Nervous System, Autonomic Nervous
System
Answers
hope this helps!! :)
Describe the phenomenon of lightning?
Answers
Lightning is a naturally occurring electrostatic discharge during which two electrically charged regions in the atmosphere or ground temporarily equalize themselves, causing the instantaneous release of as much as one gigajoule of energy.
If there are 10 Volts across a 5 Ohm resistor, what is the current?
Answers
Answer:
I = 2A
Explanation:
V = IR
10V = I × 5ohms
I = 2A
Answer:
2Ampere
Explanation:
V=IR (ohm's law) so I =[tex]\frac{V}{R}[/tex] =[tex]\frac{10}{5}[/tex]=2Ampere
A baseball is traveling (+30m/s) and is hit by a bat. It leaves the bat traveling (−40m/s). What is the change in its velocity?
Unlike some others, this is any choice, so not just 4 choices!
Answers
Answer:
Explanation:
The change must be 30 - - 40 which means it came in a 30 meters / second and went out in the opposite direction at 40 meters / second
The change is 70 m/sec.
You could show it to be - 70 meters per second as well. That's done by making the outgoing direction minus.
Delta v = vf - vi.
Now it depends on which way you define vf and vi.