Answer:
Deductive reasoning
Explanation:
deductive reasoning
the process of thinking that involves considering an overall general idea or theory and drawing specific conclusions or making specific predictions about it
9. A ball is thrown straight up with an initial speed of 30 m/s. How long will it take to reach the top of its trajectory, and high will the ball go?
Answer:
1.) Time t = 3.1 seconds
2.) Height h = 46 metres
Explanation:
given that the initial velocity U = 30 m/s
At the top of the trajectory, the final velocity V = 0
Using first equation of motion
V = U - gt
g is negative 9.81m/^2 as the object is going against the gravity.
Substitute all the parameters into the formula
0 = 30 - 9.81t
9.81t = 30
Make t the subject of formula
t = 30/9.81
t = 3.058 seconds
t = 3.1 seconds approximately
Therefore, it will take 3.1 seconds to reach to reach the top of its trajectory.
2.) The height it will go can be calculated by using second equation of motion
h = ut - 1/2gt^2
Substitutes U, g and t into the formula
h = 30(3.1) - 1/2 × 9.8 × 3.1^2
h = 93 - 47.089
h = 45.911 m
It will go 46 metres approximately high.
On which of the following objects, all sitting on the ground together, does
Earth exert a greater gravitational pull than a pencil? Check all that apply.
A. A basketball
B. A toothpick
C. A truck
D. A piece of paper
E. Your hand
Explanation:
a toothpick
100 POINTS! WILL MARK BRAINLIEST FOR CORRECT ANSWER!
Choose one object or instrument. Write a detailed explanation of what happens when a loud and quiet sound is made. Use the words vibration, energy, longitudinal wave, amplitude and particles in your answer.
Answer:
This extra energy causes the string to vibrate more, which helps it move more air particles for a longer time. A string plucked with force has greater amplitude, and greater amplitude makes the sound louder when it reaches your ear. Volume depends on amplitude. Greater amplitude produces louder sounds.
Describe the relationship between frequency and wavelength
Answer:
Frequency and wavelength are inversely related.
Explanation:
Frequency and wavelength have an inverse relationship because if one thing goes up another goes down. For example, if frequency goes up, the wavelength goes down and vice versa.
Answer:
The relationship between wavelength and frequency is that the frequency of a wave multiplied by its wavelength gives the speed of the wave.
Explanation:
Frequency and wavelength are related terms also, used to describe electromagnetic radiation or light. One simple equation is used to convert between them: frequency x wavelength = speed of light. λ v = c, when λ is wavelength, v is frequency, and c is the speed of light.
I know I'm really late but I hope this helps lol
What is a good analogy for potential energy in a circuit?
Answer: find the answer in the explanation
Explanation: The potential energy in a circuit between two points is the workdone in taking units positive charge from one point to the other in the circuit. Its S.I unit is Joule.
Because voltage of a battery or cell in a circuit is the potential energy difference across its terminal
The potential energy difference between two points is one volt, if the workdone in taking one Coulomb of positive charge from one point to the other is one Joule.
why does a bouncing ball have a greater change in momentum than a ball that is just caught
If the ball bounces, then there is an additional velocity change sending the ball back upwards opposite the original direction. Thus, for the same collision time, bouncing involves a greater velocity change, a greater momentum change, and therefore a greater impulse.
Answer:
because with the change in momentum the velocity goes to zero. (more info below)
Explanation:
Momentum is the velocity change multiplied by the mass. When you think about it, bouncing an object means it comes back from anything it bounced against, giving it a velocity that is negative. This means that the velocity change for bouncing is greater than for colliding, as the velocity goes to zero in an inelastic collision like the one described.
hope this helped!
how much work must be done by frictional forces in slowing a 1000-kg car from 26.1 m/s to rest?
Answer:
Explanation:
Work done by the frictional force is 3.41x10^5 J
It is given that,
Mass of the car, m = 1000 kg
Initial velocity of car, u = 26.1 m/s
Finally, it comes to rest, v = 0
We have to find the work done by the frictional forces. Work done is equal to the change in kinetic energy as per work - energy theorem i.e.
W = −340605 J
or Hence, the correct option is (a).
a bicycle coasts along a flat road. what form of energy does it best demonstrate
Answer:
Kinetic energy
hope this helps:))
These waves are often used as a means to transfer digital information such as a text message or website.
A)Infrared
B)Ultraviolet
C)Radio
D)Visible Light
Answer:The answer is C
Explanation:
The waves are often used as a means to transfer digital information such as a text message or website is radio waves. The correct option is C.
What is digital information?Digital information generally consists of data that is created or prepared for electronic systems and devices such as computers, screens, calculators, communication devices. These information are stored by cloud.
The wave used for the same purpose is radio waves which has the high frequency range.
Thus, the correct option is C.
Learn more about digital information.
https://brainly.com/question/4507942
#SPJ5
the skeletal system serves all the following functions except
Answer:
The major functions of the bones are body support, facilitation of movement, protection of internal organs, storage of minerals and fat, and hematopoiesis. Together, the muscular system and skeletal system are known as the musculoskeletal system.
your question seems incomplete. Kindly give the full question so that it helps :)
Answer:
D.
producing ligaments and tendons
Explanation:
A squirrel jumps down from a tall tree. Assuming the squirrel is in free fall,
how far will it have fallen in 1.3 seconds?
O A. 6.4 m
B. 13.2 m
O C. 8.3 m
O D. 11.1 m
Answer:
8.3 m
Explanation:
If you see ##### in a cell, you should
make the row taller
retype the number
type in a different number
make the column wider
Answer:
it's D. Make the column wider
Explanation:
I am literally so confused on what the question is asking halp :(
Answer: B
Explanation: Distance/Time but if u want it easier its Velocity=Distance/Time or (Final Velocity -Starting Velocity)/Time
A blow dryer transfers thermal energy mainly by
A. conduction
B. convection
C. radiation
D. specific heat
Answer:
B
Explanation:
Through air
Answer:
thermal conduction I assume
Explanation:
why because the thermal Insulator: a material that conducts thermal energy poorly. Gives off heat
Hannah knows she has some natural skill at field hockey, but she never practices in the off season. This is an example of
Answer:
wasting talent
Explanation:
Which graph shows the correct relationship between kinetic energy and speed?
Answer: D
Explanation:
Kinetic energy = 1/2mV^2
From the formula above, we can deduce that kinetic energy is proportional to the square of speed. That is,
K.E = V^2
Graphically, the relationship isn't linear but a positive exponential. Therefore, option D is the correct answer.
Answer:
The correct answer is D.
Explanation:
Hope this helps.
forms of energy!! matching game PLZ I NEED HELP !!!
Giotto used foreshortening in order to:
O A. enhance the importance of his subjects.
O B. make his figures look more realistic.
O C. combine linear and aerial perspectives.
O D. guide the eye of the viewer.
SUBMIT
Answer:
I think B is the answer.
What caused the mistake that led to the destruction of the Mar's rover?
Answer:
Metric Math Mistake Muffed Mars Meteorology Mission. 1999: A disaster investigation board reports that NASA's Mars Climate Orbiter burned up in the Martian atmosphere because engineers failed to convert units from English to metric
Explanation:
hope this helps =)
What is the mass of a 600 gram object on the moon
Which one of the following is not equivalent to 2.50 miles?
(1.00 mi = 1.61 km = 5280 ft, 1.00 yd = 3.00 ft = 12.0 in.)
(A) 1.32 x 104 ft
(B) 1.58 x 105 in
(C) 4.02 x 103 km
(D) 4.40 x 103 yd
(E) 4.02 x 105 cm
Answer:
Choice C is not equivalent to 2.50 miles.
Explanation:
The given data is now converted into feet, inches, kilometers, yards and centimeters:
mi - ft
[tex]x = (2.50\,mi)\cdot \left(5280\,\frac{ft}{mi} \right)[/tex]
[tex]x = 13200\,ft[/tex]
[tex]x = 1.320\times 10^{4}\,ft[/tex] (Choice A)
mi - in
[tex]x = (2.50\,mi)\cdot \left(5280\,\frac{ft}{mi} \right)\cdot \left(12\,\frac{in}{ft} \right)[/tex]
[tex]x = 158400\,in[/tex]
[tex]x = 1.584\times 10^{5}[/tex] (Choice B)
mi - km
[tex]x = (2.50\,mi)\cdot \left(1.61\,\frac{km}{mi} \right)[/tex]
[tex]x = 4.025\,km[/tex] (Different from Choice C)
mi - yd
[tex]x = (2.50\,mi)\cdot \left(5280\,\frac{ft}{mi}\right) \cdot \left(\frac{1}{3}\,\frac{yd}{ft} \right)[/tex]
[tex]x = 4400\,yd[/tex]
[tex]x = 4.40\times 10^{3}\,yd[/tex] (Choice D)
mi - cm
[tex]x = (2.50\,mi)\cdot \left(1.61\,\frac{km}{mi} \right)\cdot \left(100000\,\frac{cm}{km}\right)[/tex]
[tex]x = 402500\,cm[/tex]
[tex]x = 4.025\times 10^{5}\,cm[/tex] (Choice E)
Choice C is not equivalent to 2.50 miles.
A machine with a 5-N input force and a 25-N output force has a mechanical advantage of (I point)
02
05.
O20.
O125
Answer:
020
Explanation:
