A projectile is fired into the air at an angle of 50° above ground level and hits a target downrange. Neglecting air drag, it will also hit the target if fired at the same speed at an angle of

Answers

Answer 1

Answer:

18 m/s

Explanation:

Range of a projectile on level ground is:

R = v₀² sin(2θ) / g

14.3 m = v₀² sin(2×13°) / 9.8 m/s²

v₀ = 17.9 m/s

Rounded to two significant figures, the launch speed was 18 m/s.

Answer 2

If the bullet is launched at an angle of 50 degrees above ground level, the target will be struck. The angle remains the same. The launch angle obtained is 50 degrees.

Given:

The initial shot was fired at an angle of 50 degrees above ground.

The projectile's starting velocity (v) and magnitude of velocity will remain constant if it is shot at the same pace.

Let the angle of the projectile is x,

The horizontal component of velocity can be calculated as follows:

[tex]v(x) = v * cos(x)[/tex]

We can write:

since the horizontal part of velocity remains constant:

[tex]v(x1) = v(x2)[/tex]

[tex]cos(50) = cos(x)[/tex]

[tex]50 = x[/tex]

Therefore, if the projectile is launched at the same speed at a 50° angle above ground level, it will strike the target.

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The correct response is given when the angle is asked a question.


Related Questions

Consider two current-carrying circular loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the other. If the magnetic field strength at the center of the smaller loop is B, what is the magnetic field strength at the center of the larger loop

Answers

Explanation:

The magnetic field at the center of a current-carrying circular loop is given by :

[tex]B=\dfrac{\mu_o I}{2r}[/tex]

Where, I is current and r is radius of loop

We have, two current-carrying circular loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the other.

For smaller loop, the magnetic field is B (with radius r)

For larger loop, let the magnetic field be B' (with radius r', r'=2r). So,

[tex]B'=\dfrac{\mu_o I}{2r'}\\\\B'=\dfrac{\mu_o I}{2(2r)}\\\\B'=\dfrac{1}{2}\times \dfrac{\mu_o I}{2r}\\\\B'=\dfrac{1}{2}B[/tex]

Hence, the magnetic field strength at the center of the larger loop is half of the magnetic field strength at the center of the smaller loop.

A train is traveling at a speed of 50km/hr. How.many hours will it take the train to travel 800 km?

Answers

Answer:

It would take 16 hours

Explanation:

800 divided by 50 = 16

Brainly pls

Answer: [tex]t[/tex] = 16

Explanation:

Hey there! I will give the following reason, if you have any questions feel free to ask me in the comments below.

Because a train is traveling at a speed of 50 km/hr and a train needs to travel 800 km, you would need to divide the distance by the speed to find the hours.

Formula: [tex]t[/tex] = [tex]\frac{distance}{speed}[/tex]

The distance would be 800, and the speed would be 50.

[tex]t = \frac{800}{50}[/tex]

Simplify.

[tex]t = 16[/tex]

~I hope this helps you! :)~

Write the vectors labeled A, B and C with rectangular coordinates.

Answers

Focus on vector A. Start at the base of the vector which is at (1,1)

Then notice how we have to move 3 units to the right and 2 units up to get to the tip of the vector where the arrow is located. So this is at (4,3)

The fact that we moved 3 units to the right and 2 units up means that vector A is <3, 2>

So we'll type 3 in the first box and 2 in the second box.

======================================================

We use the same idea for vector B

Start at the base and move to the tip. Doing so has us move 1 unit left and 3 units down.

Vector B = <-1, -3>

We type -1 in the first box, and -3 in the second box.

======================================================

Finally onto vector C

Start at the base (0,0). To move to the tip, we need to go 3 units left and 3 units up

Vector C = <-3, 3>

-3 goes in the first box and 3 goes in the second box

======================================================

In general, vectors are useful to tell us a specific direction in which to go. They're useful in physics to determine how exactly a force is being applied, or how a particle is moving.

If an object has zero acceleration, does it have to have zero velocity?

Answers

Answer:

Yes, the velocity would also be zero.

Explanation:

Acceleration is the change in velocity over time, therefore, there has to be a change in velocity for something to accelerate. which means without acceleration, the object has no velocity.

The lungs are large organs which contain smaller, expandable sacs.
These sacs greatly increase the surface area of the lungs.
Why is a large surface area important to the function of the lungs? A. Large amounts of liquid wastes and fatty tissue must be stored in the lungs. B. Oxygen in air taken in by the lungs must move quickly through the lung tissue and into the blood. C. The lungs must be very sturdy and rigid so they cannot move. D. The lungs must be able to filter oxygen from water while the organism is swimming.

Answers

Answer:

B. It is B because without this much space for oxygen and blood to flow and go through, we would not survive.

Explanation:

a single frictionless roller coaster car of mass m=750 kg tops the first hill with speed v=15 m/s ar height h =40m as shown

1) Find the speed of the car at B and C

2) if mass m were doubled, would the speed at B increase, decrease, or remain the same?

Answers

1. The speed of the roller coaster car at point B and C: are 19.8 m/s and 0 m/s respectively.

2. If mass (m) of the roller coaster car were doubled, the speed at B would increase because energy is dependent on  the mass of an object.

Given the following data:

Mass of roller coaster car = 750 kgSpeed of roller coaster car = 15 m/sHeight = 40 meters

1. To find the speed of the roller coaster car at point B and C:

First of all, we would determine the potential energy of the roller coaster car by using the formula:

[tex]P.E = mgh[/tex]

Where:

m is the mass of object.g is the acceleration due to gravity ([tex]9.8\;m/s^2[/tex]).h is the height of an object.

From the diagram, height at point B = [tex]\frac{h}{2} = \frac{40}{2} = 20[/tex] meters

[tex]P.E = 750(9.8)(20)[/tex]

P.E = 147000 Joules.

Next, we would determine the speed by applying the law of conservation of energy.

[tex]Kinetic\;energy = Potential\;energy\\\\\frac{1}{2} mv^2 = mgh[/tex]

Substituting the values, we have;

[tex]147000 = \frac{1}{2} (750)v^2\\\\147000 = 375v^2\\\\v^2 = \frac{147000}{375} \\\\v^2 = 392\\\\v = \sqrt{392}[/tex]

Speed, v = 19.8 m/s

From the diagram, at point C, the speed is equal to zero (0) meters per seconds.

2. If mass (m) of the roller coaster car were doubled, the speed at B would increase because energy is dependent on  the mass of an object.

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2. Which of the following is a true statement.
Sound travels faster than light.
Sound travels slower than light

Answers

Answer:

Sound travels slower than light

Explanation:

Sound travels at around 1/3 km per second, while light travels around 300,000 km per second.

Also, this is the reason you see the lightning before you hear the thunder.

I hope this helped.

Answer:

Sound travels slower than light

Explanation:

Bc light is faster than sound

A speed skater moving across frictionless ice at 8.8 m/s hits a 6.0 m -wide patch of rough ice. She slows steadily, then continues on at 5.8 m/s . What is her acceleration on the rough ice?

Answers

Recall that

v² - u² = 2 ax

where u and v are initial and final velocities, respectively; a is acceleration; and ∆x is the distance traveled (because the skater moves in only one direction).

So we have

(5.8 m/s)² - (8.8 m/s)² = 2 a (6.0 m)

a = ((5.8 m/s)² - (8.8 m/s)²) / (12 m)

a = -3.65 m/s²

The two main types of weathering are (4 points)
A. mechanical and physical
B. physical and kinetic
C. chemical and physical
D. chemical and acidic

Answers

Answer:

b

Explanation:

Answer:

its acually c

Explanation:

HELP!
Which process of heat transfer makes milk boil?

Answers

Answer:

milk is raised to a certain level for sometimes and immediately cooled to the lower degree

1) Construct a graph showing the relationship between and independent variable and a dependent variable. 2) Demonstrate potential and kinetic energy. 3) Design a pendulum. 4) Investigate which variables influence the period of a pendulum. 5) Solve a problem using the scientific method. 6) Use graphs to characterize gow drop height responds to bounce height. (Next answer questions 1 - 6). 1) Write the goal of the lab or the question you tried to answer? 2) which observations, experiences, or lesson materials helped you form a hypothesis? 3) State your hypothesis? 4) Use the data from your experiment to complete these data tables? [Data Table 1: Period vs. Mass] Mass(g) / Time for 10 periods (s). [ Data Table 2: Period vs. String Length] String Length (cm) / Time for 10 periods (s). ( Question 5) Graph your data: A) Determine the values in seconds (s) for the y-axis based on your time data. B) Plot mass vs. time for 10 periods on the first graph. C) Plot string length vs. time for 10 periods on the second graph. ( question 6) Compare your data with your hypothesis. Explain how the data supports or does not support your hypothesis. If your data does not support your hypothesis, use the data you collected to answer the original question. { Truly Need Help and will mark brainlest} Please Please be very honest with your response. ​

Answers

Could you zoom in a lil more so i can see what iy says on the side and i gotchu

three charges are located at 100m intervals along a horizontal line: a charge of -3.0C on the left, 2.0C in the middle, and 1.0C on the right. What is the resultant force on the 1.0C charge due to the other two

Answers

We know, force is given by :

[tex]F=\dfrac{kq_1q_2}{r^2}[/tex]

Here, k in a constant.

[tex]Net \ Force = F_1+F_2\\\\Net \ Force = k(\dfrac{Qq_1}{r_1^2}+\dfrac{Qq_2}{r_2^2})\\\\Net \ Force = k( \dfrac{-3}{50}+\dfrac{2}{50})\\\\Net \ Force = 9\times 10^9\times \dfrac{-1}{50}\ N\\\\Net\ Force = -1.8\times 10^8\ N[/tex]

Hence, this is the required solution.

show answer No Attempt 50% Part (b) Calculate the non-relativistic speed of these electrons v in m/s.

Answers

Complete Question

The complete question is shown on the first uploaded image

Answer:

The value is  [tex]v = 9.18 *10^{6} \ m/s[/tex]

Explanation:

From question we are told that

  The potential  difference is  [tex]\Delta V = 0.24 kV = 0.24 *10^{3} \ V[/tex]

Generally the the non-relativistic speed of these electrons  is mathematically represented as

       [tex]v = \sqrt{\frac{2 * e * \Delta V}{m} }[/tex]

Here  m is the mass of an electron with value [tex]m = 9.11 *10^{-31 } \ kg[/tex]

           e  is the charge on an electron with value  [tex]e = 1.60 *10^{-19} \ C[/tex]

So

        [tex]v = \sqrt{\frac{2 * 1.60 *10^{-19} * 0.24 *10^{3} }{9.11*10^{-31}} }[/tex]

=>   [tex]v = 9.18 *10^{6} \ m/s[/tex]

A vector is 9.55m long and points in a -48.0 degree direction. find the x component​

Answers

Answer:

x=6.39 m

Explanation:

Rectangular Components of a Vector

Vectors can be expressed in several forms, including the magnitude-angle form, and the rectangular-coordinates form.

If the magnitude r and angle β are given, we can find the rectangular coordinates (x,y) as follows:

[tex]x=r\cos\beta[/tex]

[tex]y=r\sin\beta[/tex]

The vector of the question has a magnitude of r=9.55 m and an angle β=-48°. The x-component is:

[tex]x=9.55\cdot\cos(-48^\circ)[/tex]

Using a digital calculator:

x=6.39 m

x component = 6.39y component = -7.09formulas:x = r * cos * βy = r * sin * βplug in numbers:x = 9.55 * cos (-48°)y = 9.55 * sin (-48°)

How are gas giants similar to one another?

Answers

Answer:

they are all made of gass and they are all giants.

Explanation:

Answer:

How are the gas giants similar to one another? dont have solid surfaces and are much larger than earth. Why do all of the gas giants have thick atmospheres? Because they are so massive, the gas giants exert a much stronger gravitational force than the terrestrial planets

Explanation:

If a wave is traveling at a constant speed, and the frequency increases, what would happen to the wavelength?
It would increase
It would decrease.
It would remain constant.
It would drop to zero.

Answers

If a wave is traveling at a constant speed, and the frequency increases, the wavelength would decrease.

What is wavelength?

The wavelength is the distance between the adjacent crest or trough of the sinusoidal wave. The wavelength is the reciprocal of the frequency of the wave.

Wavelength λ = 1 / frequency

The wavelength and frequency are inversely related to each other. So, when frequency is increased, the wavelength increases.

Thus, the wavelength of would decrease if the frequency increases.

Learn more about wavelength.

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Answer:

B. It would decrease

Explanation:

rt A How much work does the electric motor of a Van de Graaff generator do to lift a positive ion (q=e) if the potential of the spherical electrode is 2.0 MV ?

Answers

Answer:

W = 2.0 MeV = 3.2*10⁻¹³ J

Explanation:

Assuming that the ion is located originally at a point where the electrostatic potential is zero, the change in energy of the ion is just the change in electrostatic potential times the charge of the ion, as follows:

        [tex]\Delta E = e*V = 1.6e-19 C * 2.0e6 V = 2.0 MeV = 3.2e-13 J[/tex]

This change in energy, assuming no friction present, must be equal to the work done by the motor on the ion:

        W = 2.0 MeV = 3.2*10⁻¹³ J.

the state of matter that has low thermal expansion​

Answers

Answer:

Matter

Explanation:

Because it is solid

Answer:

Solid

Solid < Liquid < Gas

is newton's first law true on earth?

Answers

Newton's First Law states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.

THIS LAW IS TRUE AS IT ALSO HAVE A REAL LIFE EXAMPLE.

Examples of Newton's 1st Law : If you slide a hockey puck on ice, eventually it will stop, because of friction on the ice. It will also stop if it hits something, like a player's stick or a goalpost.

2.9030 cm has 4 significant digits.
TRUE OR FALSE

Answers

Answer: false

Explanation:

Will ice melt faster in salt, sugar or water?

Answers

Answer:

Water because the salt will just make it colder and the sugar won't do anything

An underwater sound source emits waves of frequency 30 kHz in all directions. How does the intensity of the waves (in Watts/m2) vary with distance r from the source?


a) 1/r^3
b) 1/r^2
c) 1/r
d) None of above

Answers

b or c not sure but try

When an underwater sound source emits waves of frequency 30 kHz in all directions, the intensity of the waves (in Watts/m2) vary with distance r from the source by the relation 1/r²

As the intensity mechanical sound wave is inversely proportional to the square of the distance from the source, therefore the correct option is B.

What is the Wavelength?

Wavelength can be understood in terms of the distance between any two similar successive points across any wave for example wavelength can be calculated by measuring the distance between any two successive crests.

It is the total length of the wave for which it completes one cycle.

The intensity of a mechanical wave is inversely proportional to the square of the distance from the source.

An underwater sound source emits waves of frequency of 30 kHz in all directions, the intensity of the waves (in Watts/m2) varies with distance r from the source by the relation 1/r², therefore the correct option is B.

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Which of the following does not discribe a mineral

Answers

Answer:

give us some further context to answer your question as well

Explanation:


A baseball's resultant velocity is 25.79 m/s, at 68.64° from the level ground.
Determine the vertical component of the baseball's velocity.

Answers

Answer:

Vy = 24.01 [m/s]

Explanation:

To solve this problem we must understand that velocity is a vector and therefore has magnitude and direction, in this way we can decompose the velocity in the components x & y, by means of the trigonometric functions of the sine and cosine of the angle.

For the vertical component, the sine of the angle is used.

Vy = 25.79*sin(68.64)

Vy = 24.01 [m/s]

According to the kinetic theory, what happens when the temperature of water
increases?
The water molecules increase their speed.
The water molecules do not change speed.
The water molecules decrease their speed

PLEASE HELP

Answers

the molecules increase their speed

8. A dog runs with an initial speed of 7.5 m/s on a waxed floor. It slides to a stop in 15 sec. What
is the acceleration?
(10 Points)
O-7.5 m/s
-0.5 m/s2
O -7.5 m/s2
7.5 mi/hr

Answers

Answer:

-0.5 m/s²

Explanation:

Step 1: Given data

Initial velocity of the dog (u): 7.5 m/sFinal velocity of the dog (v): 0 m/s (Stop)Time elapsed (t): 15 s

Step 2: Calculate the acceleration of the dog

The acceleration (a) is equal to the change in the velocity over the time elapsed.

a = v - u / t

a = 0 m/s - 7.5 m/s / 15 s

a = -0.5 m/s²

Suppose Tom Harmon17 is standing at the exact center of the Ohio State football field18 on the 50 yard line. The field is 300 feet long and 160 feet wide. Suppose the ball leaves Harmon’s hand at a height of six feet and has initial velocity v(0) = 40i + 39j + 32k feet per second where j points toward the sideline, i points toward the end zone, and k = i × j points straight up. The acceleration due to gravity is −32k feet per second squared and the mass of the football is .45 kilograms.
(a) Determine a parameterization for the position of the football at time t seconds after it is thrown.
(b) Suppose David Nelson19 catches the ball when it is six feet above the ground. Is Nelson in bounds or out of bounds when he catches the ball? (Assume Nelson’s toes are touching the ground directly below the ball when he catches the ball.)'

Answers

Answer:

a) x = 40 t , y = 39 t ,  z = 6 + 32 t - 16 t ²,   b)     x = 80 feet ,  y = 78 feet , the ball came into the field  

Explanation:

a) This is a projectile launch exercise, where in the x and y axes there is no acceleration and in the z axis the acceleration of the acceleration of gravity, let's write the equations of motion in each axis

Since the cast is in the center of the field, let's place the coordinate system

          x₀ = 0

          y₀ = 0

          z₀ = 6 feet

x-axis (towards end zone,  GOAL zone)

         x = xo + v₀ₓ t

        x = 40 t

y-axis (field width)

        y = y₀ + [tex]v_{oy}[/tex] t

        y = 39 t

z axis (vertical)

        z = z₀ + v_{oz} t - ½ g t²

        z = 6 + 32 t - ½ 32 t²

        z = 6 + 32 t - 16 t ²

b) The player catches the ball at the same height as it came out, so we can find the time it takes to arrive

          z = 6

          6 = 6 + 32 t - 16 t²

          (t - 2)t  = 0

           t=0 s

           t= 2 s

The ball position

          x = 40 2

          x = 80 feet

           

          y = 39 2

          y = 78 feet

the dimensions of the field from the coordinate system (center of the field) are

             x_total = 150 feet

             y _total = 80 feet

so we can see that the ball came into the field

Sand is made of tiny pieces of rock that have been worn
down by wind and water. Explain why the formation of
sand is a physical change.

Answers

The formation of sand is physical damage because the rock that is worn down is basically broken. The rocks are broken.

Answer:

Sand is a form of physical change because it shows how one object is being worn out (broken down) into another object by nature.

Explanation:

A person has a mass of 1000 g and an acceleration of 20 M/S/S what is the force on the person

Answers

Answer:

The answer is 20 N

Explanation:

The force acting on an object can be found by using the formula

force = mass × acceleration

From the question

mass = 1000 g = 1 kg

acceleration = 20 m/s²

We have

force = 20 × 1

We have the final answer as

20 N

Hope this helps you

The most interpersonal constructive passion response to relational conflict is..

Answers

Answer:

loyalty

Explanation:

Other Questions
Benjamin Franklin's Albany Plan of UnionO outlined the battle plan for the Virginia MilitiaO gave each colony more power to govern themselvesO described how the colonies could pay for fighting a warO tried to unify the colonists to fight against the FrenchI need help Question 1A study found that teens who smoked e-cigarettes were more likely than other teens to start smoking regularcigarettes. Teens ages 12-17 that never smoked a regular cigarette were asked to report their use of e-cigarettes.One year later, the same teens were asked if they had smoked a regular cigarette. 4.6% of participants, one yearlater, had tried a regular cigarette. However, 18-19% of those who said they had used e-cigarettes at thebeginning of the study had tried regular cigarettes.Part A What is the most appropriate conclusion that can be drawn from the study?Part BIn a follow-up study, researchers wanted to examine the effect of nicotine on brain activity. How wouldresearchers examine the following concept in this study. Dopamine and the reward centerPart CHumans display various reactions that are characterized by opposing tendencies. Use a specific physiologicalmechanism to explain how both aspects of the opposing processes apply to the following concepts.Neural firingAutonomic nervous system Which two of the three elements have SIMILAR CHEMICAL PROPERTIES (valence electrons)?1. Li - Na - Mg2. F - Br - O3. P - As - Se 4. Ra - Ba - Cs when can concussions occur? A. Only when playing full contact sports.B. Only when an student isnt wearing a helmet.C. Only when the individual who was hit or jolted loses consciousness. D. In any organized or unorganized recreational sport or activity. synthetic motor oil is often used instead of conventional oil although synthetic oil has many advantages , which statement suggests a negative impact on the environment or society ? HELLP !!! Gawin at subukin mong buoin angga salitang may kinalaman sa suliraning pang paligiran.1.SEREDITIFACTION---tumutukoy sa pagkasira ng lupain saga rehiyong bahagyang tuyo o lubhang tuyo na kapag lumaon ay hahantong sa permanenteng pagkawala ng kapakinabangan o productivity nito. Need help ASAP plzzz and thank you :) HURRY Hated by his kind and by mankind, indomitable, perpetually warred upon and himself waging perpetual war, his development was rapid and one-sided. This was no soil for kindliness and affection to blossom in. Of such things he had not the faintest glimmering. The code he learned was to obey the strong and to oppress the weak. Grey Beaver was a god, and strong. Therefore White Fang obeyed him. But the dog younger or smaller than himself was weak, a thing to be destroyed. What motivates White Fang to obey the strong and to oppress the weak?What motivates White Fang to obey the strong and to oppress the weak?A. the hostility of the other characters in the storyB. the wolf instincts he inherited from his fatherC. the wildness of the woods near the campD. the hatred he feels toward the man-animals I need this answer please What is the product?8-1-4.-59-324O20-3632-4-20 What is a gene? What is its purpose?I ANGLES IN TRIANGLES WORKSHEET How do you say hi I am doing very well in french The members of an orchestra have made some notes on a calendar. Look at the notes and construct sentences using the words in the calendar. The sentences you construct should be in the future tense and should use vocabulary related to concerts. Make sure you mention the date (the name of the day, the day number, and the month) of the note before each sentence. What has happened recently in current events that you find interesting? should we celebrate Columbus day why or why not What food substance do plants produce during photosynthesis? Which sentence contains a correctly punctuated appositive phrase?There is a problem in the way you talk to, your coach Mrs. Brown.My brother Louie, hit two home runs in the game Saturday.Rique my best friend turned in his project early and earned a perfect 100 percent!Annika has read Jane Eyre, her favorite book, six times! meaning of rescinded According to the Fifth Amendment, people who are accused of a crimecannot be tried twice for the same crime.cannot be arrested for two different crimes.cannot be forced to have two trials.cannot be forced to follow rules for a trial.