Answer:

**Answer:**

**Explanation:**

The specific heat for watermelon above freezing point is . The heat liberated by the watermelon to cool down to 8°C is:

The heat absorbed by the household refrigerator is:

Time needed to cool the watermelons is:

Which outcome most accurately portrays the future for the timber company in the following scenario?A timber company that cuts and sells its own wood has been in high demand for the past three years. The company has gone through many acres of forest in its area, but it is sure to plant tree seeds after it bulldozes a section.The timber company will lose business soon because not many people will need to build houses and buildings anymore.The timber company will run out of trees quickly because the seedlings will not have enough time to become full-grown timber.The timber company will go out of business due to the rising number of buildings using cement and concrete rather than timber.The timber company will continue to grow because of its good business practices, and it will become the number one timber company in the country.

What is a SAFETY CHECK

A rocket is launched vertically from rest with a constant thrust until the rocket reaches an altitude of 25 m and the thrust ends. The rocket has mass 2 kg and thrust force 35 N. Neglecting air resistance, determine (a) the speed of the rocket when the thrust ends, (b) the maximum height reached by the rocket, and (c) the speed of the rocket when it returns to the ground.

An aquifer has three different formations. Formation A has a thickness of 8.0 m and hydraulic conductivity of 25.0 m/d. Formation B has a thickness of 2.0 m and a conductivity of 142 m/d. Formation C has a thickness of 34 m and a conductivity of 40 m/d. Assume that each formation is isotropic and homogeneous. Compute both the overall horizontal and vertical conductivities.

The 15-kg block A slides on the surface for which µk = 0.3. The block has a velocity v = 10 m/s when it is s = 4 m from the 10-kg block B. If the unstrectched spring has a stiffness k = 1000 N/m, determine the maximum compression of the spring due to the collision. Assume the collision is perfectly plastic. Take e=0.6 .

What is a SAFETY CHECK

A rocket is launched vertically from rest with a constant thrust until the rocket reaches an altitude of 25 m and the thrust ends. The rocket has mass 2 kg and thrust force 35 N. Neglecting air resistance, determine (a) the speed of the rocket when the thrust ends, (b) the maximum height reached by the rocket, and (c) the speed of the rocket when it returns to the ground.

An aquifer has three different formations. Formation A has a thickness of 8.0 m and hydraulic conductivity of 25.0 m/d. Formation B has a thickness of 2.0 m and a conductivity of 142 m/d. Formation C has a thickness of 34 m and a conductivity of 40 m/d. Assume that each formation is isotropic and homogeneous. Compute both the overall horizontal and vertical conductivities.

The 15-kg block A slides on the surface for which µk = 0.3. The block has a velocity v = 10 m/s when it is s = 4 m from the 10-kg block B. If the unstrectched spring has a stiffness k = 1000 N/m, determine the maximum compression of the spring due to the collision. Assume the collision is perfectly plastic. Take e=0.6 .

This is spot to do today

**Answer:**

See below

**Explanation:**

Enter-key also called the "Return key," it is the keyboard key that is pressed to signal the computer to input the line of data or the command that has just been typed.It Was the Return KeyThe Enter key was originally the "Return key" on a typewriter, which caused the carriage to return to the beginning of the next line on the paper. In a word processing or text editing application, pressing Enter ends a paragraph. A character code for return/end-of-line, which is different in Windows than it is in the Mac, Linux or Unix, is inserted into the text at that point.

**Answer:**

True

**Explanation:**

Once there are two yellow lines having inner broken lines on the two sides of a center traffic lane, what this is trying to tell you is that you can use those lanes to start a left hand turn, or a U-turn from the both directions of traffic. However you cannot use it for passing. This is sometimes misunderstood by road users and drivers.

**Answer:**

**Explanation:**

A multipurpose transformer can act as step up as well as step down transformer according to the desired setting by a user.

When the voltage at the output is greater than the voltage at the input of the transformer then it acts as step-up transformer and vice-versa acting is a step down transformer.

Given that:

input (primary) voltage of the transformer,

no. of turns in the primary coil,

- When the output voltage is 5.60 V:

turns compensating the losses

- When the output voltage is 12.0 V:

turns compensating the losses

- When the output voltage is 480 V:

turns compensating the losses

**Answer:**

**a)Q=131.1 MJ**

**b)Q=54 MJ**

**Explanation:**

Given that

Mass ,m=200 kg

Specific heat Cp=0.46 J/g°C

Cp=0.46 KJ/kg°C

Heat of fusion = 270 J/g

Heat of fusion = 270 KJ/kg

Melting point temperature = 1450°C

a)

Initial temperature = 25°C

Final temperature=1450°C

Heat required to rise temperature from 25°C to 1450°C.

Q= m CpΔT

Q=200 x 0.46 x (1450-25) KJ

Q=131,100 KJ

**Q=131.1 MJ**

b)

Heat required to transform from solid phase to liquid phase

Q= Mass x heat of fusion

Q=200 x 27 KJ

Q=54,000 KJ

**Q=54 MJ**

Answer:

See explaination

Explanation:

See attachment for the detailed step by step solution of the given problem.

**Answer:**

the magnitude of F_A is** 752 N **

the direction theta of F_A is** 57.9°**

**Explanations:**

Given that,

Resultant force = 1330 N in x direction

∑Fx = R

from the diagram of the question which i uploaded along with this answer

FB = 800 N

FAsin∅ + FBcos30 = 1330 N

FAsin∅ = 1330 - (800 × cos30)

FA = 637.18 / sin∅

Now ∑Fx = 0

FAcos∅ - FBsin30 = 0

we substitute for FA

(637.18 / sin∅)cos∅ = 800 × sin30

637.18 / 800 × sin30 = sin∅/cos∅

and we know that { sin∅/cos∅ = tan∅)

so tan∅ = 1.59295

**∅ = 57.88° ≈ 57.9°**

THEREFORE FROM THE EQUATION

FA = 637.18 / sin∅

we substitute ∅

so FA = 637.18 / sin57.88

**FA = 752 N **

**Answer:**

*The output will be (3, 4) becomes (8, 10)*

**Explanation:**

#include <stdio.h>

*//If you send a pointer to a int, you are allowing the contents of that int to change.*

void CoordTransform(int xVal,int yVal,int* xNew,int* yNew){

*xNew = (xVal+1)*2;

*yNew = (yVal+1)*2;

}

int main(void) {

int xValNew = 0;

int yValNew = 0;

CoordTransform(3, 4, &xValNew, &yValNew);

printf("(3, 4) becomes (%d, %d)\n", xValNew, yValNew);

return 0;

}