I think its D answer
sorry I dont have explanation but I think its D
. Calculate the volume required for 1.2g of vaccine X which has a density of 0.785g/mL. (Show your workings
Answer:
v= 1.5286624 ml
Explanation:
d=m/v
despejar V= m/d
v= 1.2g/0.785g/ml
v=1.5286624 ml
How much acceleration is given to a 45 kg child with a 630 N push on a swing?
Hii :))
Force = mass × acceleration
630 = 45 × acceleration
630/45 = acceleration
14 m/s² = acceleration
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Suppose you drive an average of 25 miles a day, for a total of 60 years in a lifetime. The total distance you would have covered is equivalent to going around the earth _____ times. Take the circumference of the earth as 25,000 mile
The total distance you would have covered is equivalent to going around the earth 22 times.
Total distance traveledThe total distance traveled at a given speed and time of motion is calculated as follows;
Distance = speed x time
[tex]Distance = \frac{25 \ miles}{day} \times \frac{365 \ days}{1 \ year} \times 60 \ years\\\\Distance = 547, 500 \ miles[/tex]
Distance round the EarthThe distance round the earth or circumference of the earth of the earth has been given as 25,000 miles
Number of times round the earth[tex]n = \frac{547,500}{25,000} \\\\ n = 21.9 \ times \ \approx 22 \ times[/tex]
Thus, the total distance you would have covered is equivalent to going around the earth 22 times.
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An object orbiting the sun in a circle can be said to be.
Answer:
An object orbiting the sun in a circle can be said to be. Always accelerating. :)
It is dangerous to move towards the top of the branches of a tree why
[tex] \tt \: SOLUTION \leadsto[/tex]
It is dangerous to move towards the top of the branches of a tree because The exposed wood tissues begin to decay or either are too dilute. Due to which the branch can break and we can fall Down.
Answer:
Explanation:
It is dangerous to move towards the top of a tree because as we will move towards the top the branch gets thinner and thinner and we can fall down because of the breaking of the branch.
physics newton's second law projectile
A ball is launched at 5.5 m/s at 76 degrees above the horizontal. It starts and lands at the same distance from the ground. What are the maximum height above its launch level and the flight time of the ball?
The maximum height of the ball if A ball is launched at 5.5 m/s at 76 degrees above the horizontal is 1.45 meters.
What is distance?Distance, regardless of the direction of the travel, is the entire path that an object in motion has taken. Since the direction of motion is ignored while measuring distance, it is referred to as a scalar quantity. There is only one possible value for the distance: positive.
Given:
A ball is launched at 5.5 m/s at 76 degrees above the horizontal, It starts and lands at the same distance from the ground,
Calculate the maximum height as shown below,
Maximum height = [tex]v^2sin^2a / 2g[/tex]
Maximum height = 5.5² × sin²76° / 2 × 9.8
Maximum height = 30.25 × 0.97² / 19.6
Maximum height = 30.25 × 0.9409 / 19.6
Maximum height = 28.46 / 19.6
Maximum height = 1.45 m
Thus, the maximum height is 1.45 meters.
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Suppose wind blows on the model house from the left and
also produces an upward force on the roof. What reaction forces are
needed to support the weight of the roof and counteract forces from the wind?
The reaction force is the force that counterbalances the weight of the roof and acts upwards.
What is reaction force?The question is incomplete but I will try to help you the much I can. The image of the house is not shown hence the free body diagram can not be produced.
However, let me explain to you that force is a vector hence it has direction. The total resultant force is obtained by taking the direction of all the forces into account and this is called resolution of the forces. The reaction force is the force that counterbalances the weight of the roof and acts upwards.
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[HELPPPPP HELP ME HELP ] Current carrying conductor AB is placed in a magnetic field shown below. If the conductor AB moves away from the magnet, what will be the direction of the current in the conductor?
Answer:
B is directed from N to S (upwards at the open end)
Let the magnet be oriented with the open end at the north
F = q * v X B
A positive charge would be deflected towards the East using v X B
This is the direction of the "conventional" current which is B to A
Actual charges flow from A to B but the sign of the charge is -q
A bus travels a total of 350km in 150 minutes. What was its average speed in km/h?#
Answer:
140km/hr
Explanation:
This is a simple converstion.
We know that the bus travels 350km/150min.
We want to know the speed in km/h. All we need to know is that per 1 hr there are 60 min.
350km/150min * 60min/1hr (we want to make sure that the value we are trying to eliminate, in this case the minute, is on the opposing side.)
(350*60)/150 = 21,000km/150hr
let's simplify to only per 1 hr.
21000/150 = 140
150/150 = 1
Therefore, the speed of the bus is 140km/hr
A bus travels a total of 350 km in 150 minutes, so the average speed of the bus in km/hr will be 140 km/hr.
What are Average Speed and Average Velocity?The object's average speed is how far it travels overall in a predetermined amount of time. The scalar quantity represents the average speed. It has no direction; instead, magnitude is used to describe it.
Average Speed = [tex]Total \ Distance/Total\ time[/tex]
An indicator of a vector is average velocity. Average velocity is calculated by dividing the change in position or displacement by the intervals during which it occurs. The average velocity may be positive or negative depending on how the displacement is dispersed. The standard international unit of average velocity is meters per second (m/s).
Average Velocity = [tex]Total \ Displacement/Total \ Time[/tex]
According to the question, the given values are :
Distance, d = 350 km
Time, t = 150 minutes or
t = 2.5 hours.
Average Speed = 350/2.5
Average speed = 140 km/hr
Hence, the average speed of the bus will be 140 km/hr.
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Where do most astronomers think the solar system formed from?.
Question:Where do most astronomers think the solar system formed from?.
Answer: Most Astronomers think the solar system formed from a Nebula
A particle with charge Q and mass M has instantaneous speed u1 when it is at a position where the electric potential is V1. At a later time, the particle has moved a distance R away to a position where the electric potential is V2. Which of the following equations can be used to find the speed u2 of the particle at the new position?
a. 1/2M(μ2^2-μ1^2)=Q (v1-v2)
b. 1/2M(μ2^2-μ1^2)^2=Q(v1-v2)
c. 1/2Mμ2^2=Qv1
d. 1/2Mμ2^2=1/4πx0 (Q^2/R)
Answer: A
Explanation:
A freight train initially moving at +10m/s decelerates at a rate of -0.1m/s^2. How far does it move in 30 seconds?
Answer:
255 [m].
Explanation:
1) the formula is (d - requred distance, V₀ - initial velocity, t - elapsed time, a - deceleration):
[tex]d=V_0t+\frac{at^2}{2};[/tex]
2) according to the formula above the required distance is:
d=10*30-0.5*0.1*900=300-45=255 [m].
Apply second equation of kinematics
[tex]\\ \tt\longmapsto s=ut+\dfrac{1}{2}at^2[/tex]
[tex]\\ \tt\longmapsto s=10(30)+\dfrac{1}{2}(-0.1)(30)^2[/tex]
[tex]\\ \tt\longmapsto s=300+(-0.1)(450)[/tex]
[tex]\\ \tt\longmapsto s=300-45[/tex]
[tex]\\ \tt\longmapsto s=255m[/tex]
A child pulls a balloon for 12m with a force of 1.0N at an angle 60 degrees below horizontal.How much work does the child do on the balloon?
Answer:
Distance for which the balloon has been pulled by the child = 12 meter
Force applied by the child to pull the balloon = 1.0 Newton
The angle below horizontal = 60 degree
These information's are already given in the question. Based on the above information's the answer to the question can be easily determined.
We know that
Work done = Force * Distance * Cos(60)
= 1 * 12 * (1/2)
= 1 * 6
= 6 Joules
So the work done by the child is 6 joules. I hope the procedure is clear enough for you to understand. Based on the above mentioned procedure, you can always solve problems of similar kind without taking any outside help.
Explanation:
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In the experiment described in the scenario, which group represents the control group?
A.) Plant D
B.) Plant B
C.) Plant C
D.) Plant A
Explain what Pulse Wave is.
Answer:
A Pulse Wave is a short, non periodic, wave formed by a single input of energy rather than a continuous or repeated input of energy.
Explanation:
A pulse wave or pulse train is a kind of non-sinusoidal waveform that includes square waves and similarly periodic but asymmetrical waves. It is a term is used in synthesizer programming, and is a typical waveform available on many synthesizers.
What are some examples of objects that scatter light?
Explanation:
Sun shining hope i help you! :)
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A textbook with a weight of 20 N is lifted 0.7 meters from the ground. What is the work, in joules, needed?
A 1000 kg car is pushed with 400 N of force over 50 meters. What is the work, in joules, needed?
A student pushes a cart with 10 N of force for 20 meters. What is the work, in joules, needed?
Answer:
14J
20000J
200J
Explanation:
formula :W=FS
W:work done
F:force (N)
S:displacement moved in direction of force (m)
1) 20N×0.7m
=14J
2) 400N×50m
= 20000J
3) 10N×20m
=200J
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1. A virtual image is 3 meters behind a flat mirror and it is 2 meters tall. What is the height and distance from the mirror, for the object?
2. A concave mirror has a focal length of 1 meter. An object is 2 meters from the mirror. What is the image distance from the mirror?
3. Alens has a focal length of -10 cm. If the image of an object is located at -20 cm, what is the distance of the object?
Answer:
1. The distance of image from the plane mirror is same as the distance of object (person) from the plane mirror but the image is formed behind the mirror.
v=u=3 m
Thus distance between image and the person d=u+v=3+3=6 m
2.A concave mirror has a radius of curvature of 1.0 m. An object is placed 2.0 m in front of the mirror. Can you determine the location of the image (in cm)
1/v = 1/f - 1/u = 1/50 - 1/200 = 4/200 - 1/200 = 3/200
v = 200/3 c
NUMBER 3 Ans: 18.75 cm.
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A person exerts 12.0 N on a 0.145 kg baseball for 0.480 s. What is the change in velocity of the base ball?
The change in velocity of the baseball is 39.72 m/s
What is change in velocity?
This is the difference between the final and the initial velocity of a body.
To calculate the change in velocity of the ball, we use the formula below.
Formula:Ft = mΔv.............. Equation 1Where:
F = Force exerted by the persont = timem = mass of the baseballΔv = Change in velocity.Make Δv the subject of the equation
Δv = Ft/m........... Equation 2From the question,
Given:
F = 12 Nt = 0.480 sm = 0.145 kgSubstitute these values into equation 2
Δv = (12×0.48)/0.145Δv = 39.72 m/s.Hence, The change in velocity of the baseball is 39.72 m/s
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What form does the signal take while it is broadcast from a transmitting station to your radio or television, regardless of whether it is a digital or analog wave? transverse longitudinal mechanical sound.
Answer:
transverse
Explanation:
Answer:
Transverse wave is the correct answer, the person above me is correct!
~Hope this helps! :)
List any 10 home appliance in which different types of electric components are used
Air Conditioner.
Washing Machine.
Refrigerator.
Induction Stove.
Vacuum Cleaner.
Camera
Microwave Oven.
Water Purifier
A. What do you think is the importance of studying Anthropology in your life as a teenager? Cite five situations happenings in your life that proved its significance and give a one sentence explanation
Your Life Situation
Significance (One-Sentence Explanation)
B. Select only five among the eight areas of concern and give a phrase or a one-sentence statement on how Anthropology is significant/beneficial to the identified areas of concern.
Areas of Concern
How Anthropology Is Significant Beneficial to this Area (phrase/sentence)
The importance of a studying anthropology to teenagers is that help them to know their roles in the society as well as teach them acceptable social behaviour.
What is anthropology?Anthropology is the scientific study of human behaviour, culture and language, both in past and present human societies.
A study of anthropology helps to educate teenagers and help them see their roles in the society as well as them acceptable social behaviour.
Area of importance of anthropology include:
Socio-cultural anthropology - educates about societies and their culturePhysical anthropology - provides a biological knowledge of people in a societyArchaeological anthropology - tells us about societies in the pastLinguistic anthropology - educates about languages of societiesPsychological Anthropology educates individuals about the behavioural patterns of societies.Learn more about anthropology at: https://brainly.com/question/13728734
What would an acoustical engineer consider when designing a concert hall?
Answer:
Thus, to plan a classical concert hall that satisfies the acoustic performance, the acoustic design and evaluation should be conducted considering the acoustic parameters (i.e., reverberation time (RT), clarity (C80), and lateral fraction (LF)) of the classical music from the early
In design considerations, such as arched structures and ceiling, wood should be stressed to be prevent vibrations
Explanation:Hope this helps
Which city is known as the richest square mile on earth?.
Answer:
Central City is the county seat and the most populous municipality of Gilpin County. The city is a historic mining settlement founded in 1859 during the Pike's Peak Gold Rush and came to be known as the "Richest Square Mile on Earth".
A 51.7-kg hiker ascends a 43.2-meter high hill at a constant speed of 1.20 m/s. Determine the work done in climbing the hill.
SKILL LEVEL:
Proficient
The Doppler effect is a change in the
of sound
waves that occurs wipen the source of the sound waves is
moving relative to a stationary listener.
Check it
2 SCRATCHPAD
^ Improve this question
Answer:
The Doppler effect is a change in the frequency of sound waves that occurs when the source of the sound waves is moving relative to a stationary listener. Sound waves that are closer together have a higher frequency, and sound waves that are farther apart have a lower frequency.
Explanation:
hope it helps you
Three materials were rubbed with an insulating cloth and tested to determine their charge. The table shows the results. Which material could be a metal?
Answer:
When two materials are rubbed together, the material with the greatest affinity for electrons is the material which takes electrons away from the other material. Saran wrap takes electrons from nylon and acquires the negative charge. In turn, the nylon loses electrons and becomes charged positively.
I think it's right, HOPE IT HELPS AND BE SAFE :D
13. If a 40,000g cannon ball is 35m above the Earth's surface, how much potential energy does the cannon
ball have?
Answer:
PE = 13734 Joules
Step-by-step explanation:
Formula: PE = m * g * h
Givens
m = 40000 grams
m = 40000 grams * 1kg/1000 grams = 40 kg
g = 9.81
h = 35 m
PE = 40 * 9.81 * 35
PE = 13734 Joules