A newspaper delivery boy throws a newspaper onto a balcony 1.25 m above the
height of his hand when he releases the paper. Given that he throws the paper with
a speed of 15.0 m/s and an angle of 32° above horizontal, find:
L/10]
Draw a detailed diagram. g = 9.81 m/s2 [down]
(a) the maximum height of the paper's trajectory
(b) the velocity at maximum height
(c) the acceleration at maximum height
(d) the time it takes for the paper to reach the balcony
(e) the horizontal range of the paper

Answer:

La frecuencia cardíaca objetivo durante las actividades de intensidad moderada es aproximadamente del 50 al 70% de la frecuencia cardíaca máxima, mientras que durante la actividad física intensa es de, aproximadamente, entre el 70 y el 85% del valor máximo.

Answer:

Argon belongs to zero group, i.e., is a noble gas and thus is inert. Hence it will not react with the hot filaments. Hence it is used in fluorescent and incandescent light bulbs to stop the oxygen in the light bulbs from corroding the hot tungsten filament.

Explanation:

Answer: Robert Boyle

Explanation:

Galileo's experiment and coin and feather experiment performed by Robert Boyle.

Answer:

Robert Boyle

Explanation:

Robert Boyle performed the experiment of Galileo

Please give me brainliest please

Answer:

GDP growth rate is low

Political instability

Lack of technical skills due to low literacy rate

Pressure from neighboring countries

Explanation:

Gross Domestic Product growth rate of Pakistan is much lower than many developed countries. The GDP growth rate for Pakistan is nearly 5% which is not even stable and it variate from plans. Due to which Pakistan is unable to use its available resources to the fullest. Also one of major issue is political instability in the country. After the loss of great leader Quaid e Azam Pakistan has not faced any loyal leader till date.

Noise pollution, health issues, lack of provision of basic necessities to many are few other factors which give rise to poor law and order situation in the country. Lack of availability of heavy machinery and poor infrastructure has contributed to the country decline. There is abundance of natural resources in the country but due to these issues the country is unable to deal with the challenges.

The pressures from neighboring countries have made the situation even worst. The heavy loan burden is restricting the country from development. The covenants imposed by the lenders have limited the country's ability to use its natural resources and become stable.

Hi there "Princess "

Here is ur answer

Answer:

4 m/s or 4 meters per second.

Explanation:

In order to calculate the speed of wave, you multiply the wavelength in meters and the frequency of the Wave in Hertz. 2 times 2 equals 4. The wave speed is always in m/s considering that the wavelength is also in meters.

Answer:

charge C = greatest net force

charge B = the smallest net force

ratio  = 9 : 1

Explanation:

we know that in Electrostatic Forces, when 2 charges are at same sign then they repel each other and if they are different signed charges then they attract each other

so as per Coulomb's formula of Electrostatic Forces

F = [tex]\frac{k\ q_1\ q_2}{r^2}[/tex]     .....................1

and here k is 9 × [tex]10^9[/tex] N.m²/c² and we consider each charge at distance d

so two charge force at A to B is

F1 = [tex]\frac{k\ q^2}{d^2}[/tex]

and force between charges at A to C, at 2d distance

F1 = [tex]\frac{k\ q^2}{(2d)^2}[/tex]  =  [tex]\frac{k\ q^2}{4d^2}[/tex]

force between charges at A to D,  3d distance

F1 = [tex]\frac{k\ q^2}{(3d)^2}[/tex]  = [tex]\frac{k\ q^2}{9d^2}[/tex]  

so

Charge a It receives force to the left from b and c and to the right from d

so at a will be

F(a)  = -F1 - F2 + F3             ....................2

put here value

F(a) = [tex]-\frac{k\ Q^2}{d^2}-\frac{k\ Q^2}{4d^2}+\frac{k\ Q^2}{9d^2}[/tex]

solve it

F(a) = [tex]\frac{k\ q^2}{d^2}(-1-\frac{1}{4}+\frac{1}{9})[/tex]  

F(a) = [tex]-\frac{41}{36}\ F1[/tex]   = 1.13 F1  

and

Charge b It  receives force to the right from a and d and to the left from c

F(b) = F1 - F1 + F2            ....................3

F(b)  =  [tex]\frac{k\ q^2}{d^2}-\frac{k\ q^2}{d^2}+\frac{k\ q^2}{4d^2}[/tex]    

F(b)  = [tex]\frac{1}{4} \ F1[/tex]    =  0.25 F1

and

Charge c It receives forces to the right from all charges.

F(c) = F2 + F 1 + F 1      ....................4

F(c) = [tex]\frac{k\ q^2}{4d^2}+\frac{k\ q^2}{d^2}+\frac{k\ q^2}{d^2}[/tex]      

F(c) =  [tex]\frac{9}{4} \ F1[/tex]   = 2.25 F1

and

Charge d It receives forces to the left from all charges

F(d) = - F3 - F2 -F 1      ....................5

F(d) = [tex]-\frac{k\ q^2}{9d^2}-\frac{k\ q^2}{4d^2}-\frac{k\ q^2}{d^2}[/tex]  

so

F(d) = [tex]-\frac{49}{36} \ F1[/tex]    = 1.36 F1

and

now we get here ratio of the greatest to the smallest net force that is

ratio = [tex]\frac{2.25}{0.25}[/tex]

 ratio  = 9 : 1

Answer: A

Explanation: When a steel ball is thrown into a viscous liquid, three forces will act on the ball.

1.) The viscous drag force V which is acting upward

2.) The buoyant force U which is acting upward and

3.) The weight of the ball W. Which is acting downward.

When it is moving with an acceleration a, the weight W will be greater than U and V

Since Force = ma.

The resultant vector force will be

W - V - U = ma

Answer:

Explanation:

Here h=36m, a=g=10m/s, u=0

Use s=ut+(1/2)at^2

36=0*t+(10t^2)/2

time=2.68 sec

As from the formula of final velovity, v=(2gh)^1/2

v=(2*10*36)^1/2

v=(720)^1/2

v=26.83………This is the final velocity

Answer:

Explanation:

s = vit + 1/2 gt*2

36 = 0 + 1/2 x 9.8 x t*2

t*2 = 7.34

t = 2.7sec

now,

2gs = vf*2 - vi*2

2 x 9.8 x 36 = vf*2 - 0

vf*2 = 705.6

vf = 26.5m/s

Answer:

a) true, b) true, c) false

Explanation:

Este ejercicio de cinemática se pide revisar varias afirmaciones

a) Cierta.  La velocidad horizontales consta

b) cierto.  La velocidad vertical disminuye hasta llegar a cero en su altura máxima, la aceleración es negativa

C) False.   Si la velocidad es tangente a la trayectoria el movimiento debe ser circular, pero este movimiento es parabólico

Traduction

This exercise in kinematics asks you to review several statements

a) true. The horizontal speed consists

b) true. The vertical speed decreases until it reaches zero at its maximum height, the acceleration is negative

C) False. If the speed is tangent to the path, the movement must be circular, but this movement is parabolic.

With respect to parabolic motion:

Con respecto al movimiento parabólico:

Learn more about Parabolic motion:

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Answer:

The Galaxy IV satellite belongs to the HS-601 model category. It was engineered by Hughes Space and Communications Company (HSC)

Explanation:

The Galaxy IV belong in this category because it is a communications satellite. It was built for direct television broadcasting, for private business networks and mobile communications.

Cheers!

Answer:

Sun's Gravitational Pull

Explanation:

Planets revolve around the sun because of the Sun's gravitational pull pulling all the planets to revolve around it.

Answer:

[tex]\theta_2 = 34.61^0[/tex]

Explanation:

Path difference for the destructive interference of a single slit:

[tex]D sin \theta = n \lambda[/tex]

For the first - order minimum, n = 1, and [tex]\theta = \theta_1[/tex]

[tex]D sin \theta_1 = \lambda[/tex].........(1)

For the second - order minimum, n = 2,  and [tex]\theta = \theta_2[/tex]

[tex]D sin \theta_2 = 2 \lambda[/tex].........(2)

Dividing equation (2) by equation (1):

[tex]\frac{D sin \theta_2}{Dsin \theta_1} = \frac{2 \lambda}{\lambda} \\\frac{ sin \theta_2}{sin \theta_1} = 2 \\\theta_1 = 16.5^0\\\frac{ sin \theta_2}{sin 16.5} = 2\\sin \theta_2 = 2 sin 16.5\\sin \theta_2 = 0.568\\\theta_2 = sin^{-1} 0.568\\\theta_2 = 34.61^0[/tex]

Answer:

The correct answer will be "0.022 kg/s".

Explanation:

The given values are:

Initial amplitude,

A₁ = 0.3 m

Final amplitude,

A₂ = 0.1 m

Mass of a egg,

m = 50.0 g i.e., 0.050 kg

Time,

t = 5 sec

As we know,

⇒  [tex]A_{2}=A_{1}e^{(-\frac{b}{2m})t}[/tex]

So that, the damping constant will be:

⇒  [tex]b=\frac{2m}{t} log \frac{A_{1}}{A_{2}}[/tex]

On putting the estimated values, we get

⇒  [tex]b=\frac{2\times 0.050}{5}log \frac{0.3}{0.1}[/tex]

⇒     [tex]=\frac{0.1}{5} log \frac{0.3}{0.1}[/tex]

⇒     [tex]=0.02 \ log 3[/tex]

⇒     [tex]=0.0219 \ kg/sec \ or \ 0.022 \ kg/s[/tex]

Answer:

C = 93.4m

Ф₃= 54°

Explanation:

if Ф₁ =21° and Ф₃ = 11°

The new landowner has a triangular piece of flat land, and she wishes to fence. The length and orientation of the third side are 92.3 meters, with an orientation of 53.7°.

Numerous algebraic operations involving vectors are carried out using vector algebra. The Latin word for the carrier is a vector. Points A and B are transported by vectors. The magnitude of the vector is the length of the line connecting the two points A and B, and the vector's direction is the movement from point A to point B. Other names for vectors are Euclidean vectors and spatial vectors. In many different domains, including mathematics, physics, engineering, and others, vectors are used.

Now, according to the question :

Let the given vector is R, and it makes an angle of θ then its components will be :

[tex]R_x[/tex] = R cos θ

[tex]R_y[/tex] = R sin θ

As we know that A + B + C =0

A is given as 80 m with direction 21° below the x-axis and,

B is 105 meters, with a direction of 11° counterclockwise from the positive y-axis.

[tex]A_x\\[/tex] = 80 cos 21°

[tex]A_y[/tex] = -80 sin 21°

similarly,

[tex]B_x\\[/tex] = 105 cos 101°

[tex]B_y[/tex] = -105 sin 101°

C = -(A+B)

C = -( 80 cos 21° + 105 cos 101°) i - (-80 sin 21°+105 sin 101°) j

C = 54.65 i -74.40 j

So the magnitude vector of C will be :

|C| = [tex]\sqrt{Cx^2+Cy^2}[/tex]

|C| = 92.3 m

Now direction will be :

θ = arc tan (Cy/Cx)

θ = 53.7°

Hence, the orientation of the third side will be 53.7° and the length will be 92.3 meters.

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Responder:

Explicación:

La fórmula se utiliza para convertir grados Celsius (° C) en grados Fahrenheit (° F).

x ° C = (y ° F - 32) × 5/9.

Convertir 24 ° C a Fahrenheit

24 = (y ° F - 32) × 5/9.

24 * 9 = 5 (y ° F-32)

216 = 5 años ° F-160

5 ° F = 216 + 160

5 ° F = 376

y ° F = 376/5

y ° F = 75.2

24 ° C = 75.2 ° F

Para convertir Kelvin a Fahrenheit, usaremos la expresión;

(K - 273.15) × 9/5 + 32

Dado K = 24kelvin

24K a ° F = (24− 273.15) × 9/5 + 32

= -249.15 (9/5) + 32

= -448.47 + 32

= -416.47 ° F

24K = = -416.47 ° F

Answer:

599 meters is the answer rounded to the nearest whole number and 599.489795918 meters is the complete answer

Explanation:

to find gravitational potential energy you multiply mass x acceleration due to gravity (always 9.8 on earth) x hight

since we know the gravitational potential energy and want to find out the hight, we take the gravitational potential energy (470,000) and divide it by the product of acceleration due to gravity x mass (9.8 x 80)

so how high the hiker climbed is equal to 470,000 divided by (9.8 x 80)

hight = 470,000 / (9.8 x 80)

hight = 470,000 / 784

hight = 599.489795918 meters

as for rounding, if the decimal is less than 5 you round "down" and keep the current whole number, if the decimal is 5 or greater you round "up" and add 1 to get your new number

Answer:

actually its 600

Explanation:

on edge2020

Answer:

45 m above the ground

Explanation:

The formula for height is height = PEg/ mg (gravitational potential energy/ mass times g).

37,485/ (85 kg*9.8m/s^2)

37,485/ 833 = 45 m above the ground

The height of construction worker above the ground is of 45 m.

Given data:

The mass of construction worker is, m = 85 kg.

The gravitational potential energy stored in worker is, U = 37,485 J.

We know that the energy of any object by virtue of its position is known as gravitational potential energy. So, the expression for the gravitational potential energy of construction worker is,

U = mgh

here,

g is the gravitational acceleration and h is the height above the ground.

Solving as,

37485 = 85 × 9.8 × h

h = 45 m

Thus, we can conclude that the height of construction worker above the ground is of 45 m.

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THEY SHOULD COMPARE THE LENGTH OF PENCILS WITH EACH OTHER .

Answer:

1

(a) Ans we are applying the formula

product of means = product of extremes

So according to the formula 5x = 60

x= 60/5

x = 12

(b) Ans we are applying the formula

product of means = product of extremes

2310=11 y

y = 2310/11

y = 210

Explanation:

(a)In product of means we multiply inner values with each other like in this case for solution of a part  5 and x are inner values and in product of extremes we multiply outer value like in case of solution for a 3 and 20 are outer values.

Answer:

over weight

Explanation:

being over weight

hope this helps

Answer:

3.44 s

Explanation:

Given:

Δx = 45.8 m

v₀ = 19.8 m/s

a = -3.77 m/s²

Find: t

Δx = v₀ t + ½ at²

45.8 = 19.8 t + ½ (-3.77) t²

45.8 = 19.8 t − 1.885 t²

1.885 t² − 19.8 t + 45.8 = 0

t = [ -b ± √(b² − 4ac) ] / 2a

t = [ 19.8 ± √((-19.8)² − 4 (1.885) (45.8)) ] / 2(1.885)

t = [ 19.8 ± √(392.04 − 345.332) ] / 3.77

t = 3.44 or 7.06

The first time, 3.44 seconds, is correct.

The second time is the time it would take the car to return to 45.8 m if it continued decelerating after stopping.

Answer: 4. Infrared radiation

Explanation: Both carbon dioxide and methane are excellent absorbers of heat. The heat energy causes the molecule of carbon dioxide and methane to vibrate. As a result of this, the molecules gives up the extra energy by emitting  infrared photon.

Therefore, the Evidence that supports the idea that increases in carbon dioxide and methane in Earth's atmosphere are major contributors to global warming is primarily based on the fact that carbon dioxide and methane are excellent absorbers of infrared radiation

Explanation:

1st- states that when two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction. 

2nd- states that the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it. (most important law)

3rd- states that when two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction. (law of action/reaction)

Answer:

Explanation:

Distance = 1 km

= 1000m

Time = 100 sec

Speed = distance / time

= 1000 / 100

= 10 m/s

Answer:The object has negative acceleration and eventually stops.

Explanation:

Answer:not sure

Explanation:

Sorry:(

Answer:

Explanation:

Fill the graduated cylinder partially with water to a level where you can submerge the object and drop the sinker weight into the water. If you don't have a graduated cylinder to fit your object, put a cylinder in a basin, fill it to the top with water and measure the overflow into the basin. Your answer will be less accurate because of the number of times the water has been moved. Note the amount of displacement in milliliters (ml) caused by the sinker and string.

Measure the mass of your object (say a cork) on a balance scale in grams (g). Be sure the object is dry when it is measured. Record its weight. Attach the sinker with the string to the object. If you use a staple or pin, be sure to include that when you measure the displacement of the sinker in step one.

Answer:

As it is going down the hill

Explanation:

Answer:

As it is going down the hill.