Answer:
The maximum height reached by the body is 313.6 m
The time to return to its point of projection is 8 s.
Explanation:
Given;
initial velocity of the body, u = 78.4 m/s
at maximum height (h) the final velocity of the body (v) = 0
The following equation is applied to determine the maximum height reached by the body;
v² = u² - 2gh
0 = u² - 2gh
2gh = u²
h = u²/2g
h = (78.4²) / (2 x 9.8)
h = 313.6 m
The time to return to its point of projection is calculated as follows;
at maximum height, the final velocity becomes the initial velocity = 0
h = v + ¹/₂gt²
h = 0 + ¹/₂gt²
h = ¹/₂gt²
2h = gt²
t² = 2h/g
[tex]t = \sqrt{\frac{2h}{g} } \\\\t = \sqrt{\frac{2\times 313.6}{9.8} }\\\\t = 8 \ s[/tex]
Please answer this!!! I will give brainliest!!!
Answer:
The last one
Explanation:
Answer:
The dotted line from the earth to the moon represents your line of sight when looking at the moon. ... So the basic explanation is that the lunar phases are created by changing angles (relative positions) of the earth, the moon and the sun, as the moon orbits the earth
Explanation:
Which of the following are not vectors?
Answer:
time
Explanation:
For example, displacement, velocity, and acceleration are vector quantities, while speed (the magnitude of velocity), time, and mass are scalars. To qualify as a vector, a quantity having magnitude and direction must also obey certain rules of combination.
A thermometer has a scale which starts at -10 Celcius and ends at 110 Celcius. What is the value of the lower fixed point and of the upper fixed point of the scale?
Explanation:
The Kelvin, Celsius, and Fahrenheit scales are the three temperature scales that are most widely used. In most physical experiments the Celsius scale is used to take common measurements, but the Kelvin scale is used for most calculations.
What is it called when dolphins communicate underwater through sound waves?
Answer: Echolocation
Explanation:
When light rays pass through a lens and are spread apart we call that...
Answer:
the correct answer is reflection
Answer:
diversion
Explanation:
when light rays spread apart after passing through a lens we call it diversion.
this type of lens is called diverging lens (concave lens)
Hope it helps
What is the efficiency of a frictionless ramp that is 10 meters long and 1 meter high?
50%
100%
10%
1000%
Answer:
1000Explanation:
because ( ･ั﹏･ั)( ･ั﹏･ั)( ･ั﹏･ั)
what does 3F means?
Please help me with this.....
Answer: Fitness, Fun & Friendship
Explanation:
A construction worker puts 20 J of energy in to one strike of his hammer on the head of a nail. The energy transferred to driving the nail into the wood is 8.0 J. What is the efficiency of the construction worker's hammering? (2 sig figs and answer in a percentage)
Answer:
The efficiency of the constuction is 9.0
Explanation:
which feature of a balanced chemical equation demonstrates the law of conservation of mass?
A balanced equation demonstrates the conservation of mass by having the same number of each type of atom on both sides of the arrow
which items below describes specific kinds of producers.
medical doctor
grocery store owner
a person eating in a restaurant
trial lawyer
computer shopper
Answer:
grocery store owner
medical doctor
trial lawyer
A circuit with two resisters and a 12 V battery has a current of 0.5 A. Which of the following circuit diagrams could represent the circuit?
The correct option about electric circuit diagram question is option C).
What is Ohms Law?The relation between electric current and potential difference is stated by Ohm's law assuming that all physical parameters, including temperature, stay constant.Most conductors current is directly proportional to the voltage applied to them.German physicist Georg Simon Ohm was the first to empirically confirm Ohm's law.The equation for ohms law is V = IR where V is the potential difference applied, I is the current and R is the resistance.How to solve this question?To solve this question we have to apply on ohms law on every given circuit and have to find out the value of current flowing through it.
The circuit in which the value of current flowing is equal to 12V that will be our answer.
Let us analyse option A
V = 12 V, R = 16 + 12 ohm = 28 ohm
I = V/R = 12/28
I = 0.42
Let us analyse option B
V = 12 V, R = 24 + 8 ohm = 32
I = V/R = 12/32 A
I = 0.375 A
Let us analyse option C
V = 12 V, R = 16 + 8 ohm = 24
I = V/R = 12/24 A
I = 0.50 A
Let us analyse option D
V = 12 V, R = 24 + 24 ohm = 48
I = V/R = 12/48 A
I = 0.25 A
From above analyses we can easily understand that the value of current is 0.5 A only in option C.
Thus, we can conclude that as after solving the circuits using ohms law we are getting the value of current as 0.5 A only in option C, So the correct option to the question will be option C.
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To calculate an object’s momentum, you would use the formula
a. momentum = mass/acceleration
b. momentum = mass x velocity
c. momentum = mass x acceleration
d. momentum = mass/velocity
To calculate an object’s momentum, you would use the formula :
b. momentum = mass x velocityA wire carries a current of 6.52 A in a direction that makes an angle of 44.8 degrees with the direction of a magnetic field of strength 0.258 T. What is the magnetic force on a 3.61 m length of wire
Answer:
[tex]F=4.27N[/tex]
Explanation:
From the question we are told that:
Current [tex]I = 6.52 A[/tex]
Angle [tex]\theta= 44.8 \textdegree[/tex]
Magnetic field [tex]B= 0.258 T.[/tex]
Length [tex]l=3.61m[/tex]
Generally the equation for Magnetic force F is mathematically given by
[tex]F=BIlsin\theta[/tex]
Therefore
[tex]F=0.258*6.52*3.61*sin 44.8[/tex]
[tex]F=4.27N[/tex]
If a force of 10 N acts on an object and an additional force of 6 N acts on the object in
the same direction. What will be the net force be on the object?
4N
60 N
6N
16 N
Answer:
D
Explanation:
For this kind of problem, forces add. F = F1 + F2
F1 = 6 N
F2 = 10 N
F = 6N + 10N
F = 16N
What is the average velocity of the object from t=1s to t= 3 s?
A. 1 m/s
B. 0.5 m/s
C. -0.5 m/s
D. -1 m/s
Answer:
Explanation:
Since this is a distance v time graph, the slope of the line from 1s to 3s is the velocity. However, it looks like, at t=3, the velocity is 0, so getting the definite velocity is not going to happen. We can estimate it as closely as possible. Since the line is tending from the upper left to the lower right, the slope is negative, so the velocity is also negative. That leaves only C or D as our answers. And the slope is closer to -1 than to -5, so choice D. is the one you want.
A baseball player catches a 200 gram baseball which is moving
horizontally at a speed of 42.1 m/s. Determine the force which she must
apply to the baseball if her mitt recoils a horizontal distance of 29.2 cm.
A.) 177 N
B.) 0.57 N
C.) 607 N
D.) 57290 N
Please help solve
Did you get the answer? I need it
The Earth rotates on its axis. what is it's axis.
Answer:
The thing where the 2 poles sit
Explanation:
the total resistance of the circuit
The total resistance of a series circuit is equal to the sum of individual resistances. Voltage applied to a series circuit is equal to the sum of the individual voltage drops. The voltage drop across a resistor in a series circuit is directly proportional to the size of the resistor.
If you know the total current and the voltage across the whole circuit, you can find the total resistance using Ohm's Law: R = V / I. For example, a parallel circuit has a voltage of 9 volts and total current of 3 amps. The total resistance RT = 9 volts / 3 amps = 3 Ω
Current: The total circuit current is equal to the sum of the individual branch currents. Resistance: Individual resistances diminish to equal a smaller total resistance rather than add to make the total.
Answer: 3
Explanation: If you know the total current and the voltage across the whole circuit, you can find the total resistance using Ohm's Law: R = V / I. For example, a parallel circuit has a voltage of 9 volts and total current of 3 amps. The total resistance RT = 9 volts / 3 amps = 3 Ω.
What is the force applied to an object that has a mass of 2.5 kg and an acceleration of 10 m/s²?
Explanation:
F = ma
= (2.5 kg)(10 m/s^2)
= 25 N
Water is more dense in its solid state.
Water is more dense in its solid state.
This statement is true.
Answer: what is it asking
Explanation:
What modern method of study can trace evolution airy relatedness of organisms by comparing the nucleotide sequences on DNA
Answer:
Cross-Species Sequence Comparisons
Explanation:
Cross-Species Sequence Comparisons can help in comparing the nucleotide sequences on DNA
In this comparative study, based on the different evolutionary distances, genomic sequences of species within the evolutionary tree can be determined. The coding and non coding sequences can be determined based on which it can be assessed that which are the unique gene sequences for a given species.
Plss help I will mark brainliest
Tania was asked to describe the relationship between electricity and magnetism as it relates to the Earth’s atmosphere.
1.) Electricity and magnetism are two forces that interact with Earth’s atmosphere to produce precipitation
2.) Electricity and magnetism are two forces that interact with Earth’s atmosphere to produce global warming
3.) Electricity and magnetism work hand in hand to repair the hole in the ozone layer that protects the Earth from solar radiation
4.) Electricity and magnetism are involved when solar winds interact with Earth’ magnetic field to produce electric charges responsible for auroras.
Explanation:
the correct answer is the last one
The relationship between electricity and magnetism is option 4 when the solar winds have interacted.
Relationship between the electricity and magnetism:These two are phenomena that are inter-connected to each other that generated by the electromagnetic force.
When the electric charge produced the magnetic field so it induces the movement to the electric charge that generated the electric current.
hence, the fourth option is correct.
Learn more about electricity here: https://brainly.com/question/23056096
. Consider the equation =0+0+02/2+03/6+04/24+5/120, where s is a length and t is a time. What are the dimensions and SI units of (a) 0, (b) 0, (c) 0, (d) 0, (e) 0, and (f) c?
Answer:
See Explanation
Explanation:
Given
[tex]s=s_0+v_0t+\frac{a_0t^2}{2}+ \frac{j_0t^3}{6}+\frac{S_0t^4}{24}+\frac{ct^5}{120}[/tex]
Solving (a): Units and dimension of [tex]s_0[/tex]
From the question, we understand that:
[tex]s \to L[/tex] --- length
[tex]t \to T[/tex] --- time
Remove the other terms of the equation, we have:
[tex]s=s_0[/tex]
Rewrite as:
[tex]s_0=s[/tex]
This implies that [tex]s_0[/tex] has the same unit and dimension as [tex]s[/tex]
Hence:
[tex]s_0 \to L[/tex] --- dimension
[tex]s_o \to[/tex] Length (meters, kilometers, etc.)
Solving (b): Units and dimension of [tex]v_0[/tex]
Remove the other terms of the equation, we have:
[tex]s=v_0t[/tex]
Rewrite as:
[tex]v_0t = s[/tex]
Make [tex]v_0[/tex] the subject
[tex]v_0 = \frac{s}{t}[/tex]
Replace s and t with their units
[tex]v_0 = \frac{L}{T}[/tex]
[tex]v_0 = LT^{-1}[/tex]
Hence:
[tex]v_0 \to LT^{-1}[/tex] --- dimension
[tex]v_0 \to[/tex] [tex]m/s[/tex] --- unit
Solving (c): Units and dimension of [tex]a_0[/tex]
Remove the other terms of the equation, we have:
[tex]s=\frac{a_0t^2}{2}[/tex]
Rewrite as:
[tex]\frac{a_0t^2}{2} = s_0[/tex]
Make [tex]a_0[/tex] the subject
[tex]a_0 = \frac{2s_0}{t^2}[/tex]
Replace s and t with their units [ignore all constants]
[tex]a_0 = \frac{L}{T^2}\\[/tex]
[tex]a_0 = LT^{-2[/tex]
Hence:
[tex]a_0 = LT^{-2[/tex] --- dimension
[tex]a_0 \to[/tex] [tex]m/s^2[/tex] --- acceleration
Solving (d): Units and dimension of [tex]j_0[/tex]
Remove the other terms of the equation, we have:
[tex]s=\frac{j_0t^3}{6}[/tex]
Rewrite as:
[tex]\frac{j_0t^3}{6} = s[/tex]
Make [tex]j_0[/tex] the subject
[tex]j_0 = \frac{6s}{t^3}[/tex]
Replace s and t with their units [Ignore all constants]
[tex]j_0 = \frac{L}{T^3}[/tex]
[tex]j_0 = LT^{-3}[/tex]
Hence:
[tex]j_0 = LT^{-3}[/tex] --- dimension
[tex]j_0 \to[/tex] [tex]m/s^3[/tex] --- unit
Solving (e): Units and dimension of [tex]s_0[/tex]
Remove the other terms of the equation, we have:
[tex]s=\frac{S_0t^4}{24}[/tex]
Rewrite as:
[tex]\frac{S_0t^4}{24} = s[/tex]
Make [tex]S_0[/tex] the subject
[tex]S_0 = \frac{24s}{t^4}[/tex]
Replace s and t with their units [ignore all constants]
[tex]S_0 = \frac{L}{T^4}[/tex]
[tex]S_0 = LT^{-4[/tex]
Hence:
[tex]S_0 = LT^{-4[/tex] --- dimension
[tex]S_0 \to[/tex] [tex]m/s^4[/tex] --- unit
Solving (e): Units and dimension of [tex]c[/tex]
Ignore other terms of the equation, we have:
[tex]s=\frac{ct^5}{120}[/tex]
Rewrite as:
[tex]\frac{ct^5}{120} = s[/tex]
Make [tex]c[/tex] the subject
[tex]c = \frac{120s}{t^5}[/tex]
Replace s and t with their units [Ignore all constants]
[tex]c = \frac{L}{T^5}[/tex]
[tex]c = LT^{-5}[/tex]
Hence:
[tex]c \to LT^{-5}[/tex] --- dimension
[tex]c \to m/s^5[/tex] --- units
(PLESE HELP) why does boiling pot of water have more temperature that an iceberg
What are the types of potential energy?
Answer:
Gravitational, Electrical, Magnetic, elastic potential, and chemical energy
Explanation:
When I did some research, I found 5 types of potential energy, so list the four that either came up in your lesson or are familiar to you:
Gravitational, Electrical, Magnetic, elastic potential, and/or chemical energy.
I WILL MARK YOU THE BRAINLIEST NO LINKS
Why is there more heat in an iceberg than in a pot of boiling water?
Icebergs contain many more molecules than pots of water.
Water does not hold heat very well.
Most icebergs are fairly warm to the touch.
The pot insulates the heated molecules.
Answer: There is more energy in the iceberg.
Explanation:
Just compare the size of a pot to an iceberg. Even though the boiling water is hotter, there is less total energy due to size. Therefore there is more heat(energy) in an iceberg.
Mr Mann cut a cucumber. Mr Mann said, you have performed a chemical change. Is he right?
Answer:
No.
Explanation:
The cut cucumber is still a cucumber.
Answer:
Nope.
Explanation:
Chemical change is transforming the cucumber into a pickle. However, you need vinegar, so it isn't a full change.
Therefore, Mr. Mann would not be right either way, because all he did was cut a cucumber, and he should probably get some help with all this "chemical change".
Read the scenario below and answer the question that follows.
Daniel has been describing situations about being stalked by a government agency that is trying to recover information implanted in his brain. He will also babble incoherently, soil his clothing with excrement, and hold a statue-like pose for hours at a time.
Daniel can most likely be diagnosed with __________ schizophrenia.
A.
paranoid
B.
catatonic
C.
disorganized
D.
undifferentiated
Please select the best answer from the choices provided
A
B
C
D
Answer:
Its D
Explanation:
you're welcome
In this case, Daniel can most likely be diagnosed with undifferentiated schizophrenia (Option D).
What is schizophrenia?Schizophrenia is a mental disorder characterized by disturbance in the cognitive processes of the individual.
Schizophrenia is generally a progressive mental disease where a person suffers emotional disturbance.In conclusion, Daniel can most likely be diagnosed with undifferentiated schizophrenia (Option D).
Learn more about Schizophrenia here:
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What is kinetic energy?
What is potential energy?
Calculate the amount of force required to produce motion in a car of 1000kg with an acceleration of 5m/s square.
Answer:
5000 N
Explanation:
F=ma
=1000*5
=5000N
Here's the solution,
mass = 1000 kgacceleration = 5 m/s²now, we know
[tex] \large \boxed{f = m \times a}[/tex]
so,
[tex] \hookrightarrow \: f = 1000 \times 5[/tex][tex] \hookrightarrow \: f = 5000[/tex]The force required is 5000 Newtons.
