how many apples are in 29 trees if each tree has 45 apples?

Answer:

The correct option is;

C. 25 m/s

Explanation:

The initial velocity with which the boulder was thrown = 25 m/s

The path in which the boulder projectile moves = 30°

For projectile motion, we have;

The time it takes the boulder to hit the ground is given by the following equation;

y = y₀ + v₀·sin(θ₀)t -¹/₂·g·t²

Where;

y = The height of the boulder

y₀ = The initial height of the boulder = 0

g = The acceleration due to gravity = 9.81 m/s²

When the boulder touches the ground again, the value  of y = 0. therefore, we have;

0 = 0 + 25 × sin(30)t -¹/₂ × 9.81 × t²= 12.5·t - 4.905·t²

From which we have, t = 0 or t ≈ 2.55 s

At t = 2.55 s The vertical velocity = v₀sin(θ₀) - g·t = 25 × 0.5 - 9.81×2.55 =  -12.5 m/s

The vertical velocity, [tex]v_y[/tex] =  -12.5 m/s

The horizontal velocity, vₓ = v₀·cos(θ₀) = 25×cos(30) ≈ 21.65 m/s

The magnitude of the resultant velocity before, the boulder hits the ground is given as follows

[tex]\left | v \right |[/tex] = √((vₓ)² + ([tex]v_y[/tex])²) = √(12.5² + 21.65²) = √625 = 25

The magnitude of the resultant velocity before, the boulder hits the ground is 25 m/c

Answer:

a strong nuclear force is a powerful force of attraction that acts only on the neutrons and protons in nucleus

so the answer is: STRONG NUCLEAR

Answer: 330.18m/s

Explanation:

Given data:

T1 = 20 °C

T2 = 90 °C

V = 500m/s

P1 = 100kpa

P2 = 200kpa.

Cp = 1.007kj/KgK

Solution:

Energy balance

Ein - Eout = change in Esystem.

We know

Exit velocity

V2 = (V1^2 + 2(h1 - h2)^0.5 = [V1^2 + 2Cp (T1-T2)]^0.5

input given data into the formula

V2 = [500^2 + 2 (1.007) * (20 - 90) * 1000/1 ]^0.5

V2 = 109020^0.5

V2 = 330.18m/s

Velocity at the exit is 330.18m/s

Answer:

Active transport

Answer:

y

Explanation:

i did it

The object in image [x] has a net force of -5 Newtons in the vertical direction.

In order to move a body of mass (m) with an acceleration of 'a' m/s², a force of magnitude equal to the product of body's mass and the required acceleration is needed. Mathematically -

F = ma

It is a vector quantity. In a three dimensional coordinate, the force vector can be resolved as -

[F] = F[x] a[x] + F[y] a[y] + F[z] a[z]

[F] = m {A[x] a[x] + A[y] a[y] + A[z] a[z]}

We have free - body diagrams as shown in the image.

If we observe image [x], we can easy calculate that -

The force along the horizontal F[h] = 15 - 15 = 0

The force along the vertical F[v] = 20 - 25 = - 5 Newtons

Therefore, the object in image [x] has a net force of -5 Newtons in the vertical direction.

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[Refer to the image attached for full question]

Answer:

False

Explanation:

More than one management style with all people is the most effective leadership technique for any organization. So, the given statement is False.

Leadership styles are defined as those adopted by company leaders to increase efficiency, satisfaction, growth and advancement in all positions in the organization. It requires a different style in different situations and each leader needs to know when to show a special behavior.

These strategies define every leader's personal leadership style. Some effective leadership Techniques are as follows:

Thus, more than one management style with all people is the most effective leadership technique for any organization. So, the given statement is False.

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Answer: The process is called artificial selection because people (instead of nature) select which organisms get to reproduce.

Explanation: This is evolution through artificial selection and the characteristics to reproduce, causing the evolution of farm stock.

Answer:

P = W / t       where P is power and W the work done

P = F x / t = F v

Then v = P / F = 450 J/s / 350 N = 1.29 m/s

T = 46.6 m / 1.29 m/s = 36.1 sec      where T is the required time

Answer:

whattt

Explanation:

Answer:

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

[tex]a = \frac{f}{m} \\ [/tex]

where

f is the force

m is the mass

From the question we have

[tex]a = \frac{750}{349} \\ = 2.14899713...[/tex]

We have the final answer as

Hope this helps you

Answer: it’s true

Explanation:

Answer:

the answer is true

Explanation:

i just got it right on the test 2020

Answer : Option C) Over 50% of the reporting adults are living with risk factors that can be controlled through diet and exercise.

Explanation : Assuming that the chart is as per the attachment in the answer. The answer will be more than 50 percent of the adults are living with the risk factors and it can be easily controlled through diet and exercise. It is an alarming signal to notice the health issues amongst the people.

Answer:

Free Radicals

Explanation:

AP3X

Explanation:  

In physical sciences, mechanical energy is the sum of potential energy and kinetic energy. It is the macroscopic energy associated with a system. The principle of conservation of mechanical energy states that if an isolated system is subject only to conservative forces, then the mechanical energy is constant. If an object moves in the opposite direction of a conservative net force, the potential energy will increase; and if the speed (not the velocity) of the object changes, the kinetic energy of the object also changes. In all real systems, however, nonconservative forces, such as frictional forces, will be present, but if they are of negligible magnitude, the mechanical energy changes little and its conservation is a useful approximation. In elastic collisions, the kinetic energy is conserved, but in inelastic collisions some mechanical energy may be converted into thermal energy. The equivalence between lost mechanical energy (dissipation) and an increase in temperature was discovered by James Prescott Joule.

Answer:

metamorpic rock

Explanation:

the rock stay near the ocen

Answer:

the corrdct answer is core

Answer: Explanation:

A number used to multiply a variable. Example: 6z means 6 times z, and "z" is a variable, so 6 is a coefficient. ... Example: In ax^2 + bx + c, "x" is a variable, and "a" and "b" are coefficients.

Answer:

1) False, since constant speed means constant velocity, but with constant direction as well. Velocity is speed with direction. When you move in a circle, there are boundaries which means that a constant moving speed will cause the object to veer(move in different directions) to maintain movement, If it doesn't veer, the object will deflect(rebound) off the surface due to friction, and impact force or depending on its physical bond of malleability or density.

2a) Create position vectors by drawing a ray from the center(origin) of the circle to each of your desired points, it's magnitude will be the radius(how convenient). Both of these vectors go from the center of the circle to the position on the circle. In general, the distance from the origin to a point is called the radius vector.

2b)

Answer:

That they conect the curcut and porvide electricity.

Explanation:

Answer:the wires must be conducted so that they allow for electrons to flow through the material

Explanation:

Answer:

is

Explanation:

e

Current in a series circuit =

(voltage between the ends of the circuit)

divided by

(the sum of all the individual resistors in the circuit) .

Answer:

10s

Explanation:

Given parameters:

Initial velocity  = 30cm/s

Acceleration  = 3cm/s²

Unknown:

Time it takes for the car to come to rest  = ?

Solution:

To solve this problem, we apply the right motion equation;

   Our final velocity - 0

So;

       V = U + at

Since the car is slowing down, it will have a negative acceleration

Insert the parameters and solve;

       0 = 30 + (-3) x t

          -30 = -t

              t = 10s

Answer:

hi

Explanation:

Answer: Adriaan van Maanen discovered White Dwarfs

Answer:

The transformation went from a gas to a solid which is a Deposition

Explanation:

Deposition is the phase transition in which gas transforms into solid without passing through the liquid phase. Deposition is a thermodynamic process. The reverse of deposition is sublimation and hence sometimes deposition is called desublimation.

The change of state that occurred was that the object went from gas to solid in a process of Deposition.

The properties of gas and solid:

Based on the properties of the object before and after the change, we can infer that the object went from gas directly to solid. This process is called a deposition.

In conclusion, a deposition occurred with gas changing directly to solid.

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Answer: i think unbaleannce

Explanation:

Answer:

The resultant of the vector is 6.63 km

Explanation:

Given;

vector A = 2.3 km 45°

vector B = 4.8 km 90°

The vectors in the x - direction is given by;

Aₓ = 2.3 km Cos 45° = 1.6263 km

Bₓ = 4.8 km Cos 90° = 0

The sum of the vectors in x -direction is given by;

∑X =  1.6263 km + 0 = 1.6263 km

The vectors in the y - direction is given by;

Ay = 2.3 km Sin 45 = 1.6263 km

By = 4.8 km Sin 90° = 4.8 km

The sum of the vectors in y -direction is given by;

∑Y =  1.6263 km + 4.8 km = 6.4263 km

The resultant vector is given by;

R = √(X² + Y²)

R = √[(1.6263)² + (6.4263)²]

R = 6.63 km

Therefore, the resultant of the vector is 6.63 km

The resultant displacement of the two vectors A and B is 6.63 Km and this can be determined by using the given data.

Given :

The two vectors: A = 2.3 km at 45 degrees B = 4.8 km at 90 degrees.

In order to determine the resultant displacement, first, determine the vector in x-direction:

[tex]\rm A_x=2.3cos45=1.6263 \;Km[/tex]

[tex]\rm B_x=4.8cos90=0 \;Km[/tex]

Now, the sum of the vectors is given by:

[tex]\rm \sum X=1.6263+0=1.6263\;Km[/tex]

In order to determine the resultant displacement, first, determine the vector in y-direction:

[tex]\rm A_y=2.3sin45=1.6263 \;Km[/tex]

[tex]\rm B_y=4.8sin90=4.8 \;Km[/tex]

Now, the sum of the vectors is given by:

[tex]\rm \sum Y = 1.6263+4.8=6.4263[/tex]

Now, the resultant vector is given by:

[tex]\rm R = \sqrt{X^2+Y^2}[/tex]

[tex]\rm R=\sqrt{(1.6263)^2+(6.4263)^2}[/tex]

R = 6.63 Km

The resultant displacement of the two vectors A and B is 6.63 Km.

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