Q 1: Calculate the pressure. Linda is pulling her sled carrying a present with a force of 900 N acting towards the ground. The sled has a total area of 3 cm2. Find the pressure under the sled by applying the formula.

Q2: A force of 50 N exerts a pressure of 5Pa. What is the area over which the force is acting?

Q3: A surfer applies a force of 645 N on water. The area of his surfboard is 1.5 m2. Calculate the pressure applied.

Q 4: Complete the table below.

Pressure ( N/m2) // Force applied ( N) // Area ( m2)

(fill in blank space) // 10 N // 6 m2

1000 Pa // 400 N // (fil in blank space)

800 N/m2 // (fill in blank space) // 40 m2

Under conditions for which the same room temperature is maintained by a heating or cooling system, it is not uncommon for a person to feel chilled in the winter but comfortable in the summer. provide a plausible explanation for this situation (with supporting calculations) by considering a room whose air temperature is maintained at 20â°c throughout the year, while the walls of the room are nominally at 27â°c and 14â°c in the summer and winter, respectively. the exposed surface of a person in the room may be assumed to be at a temperature of 32â°c throughout the year and to have an emissivity of 0.90. the coefficient associated with heat transfer by natural convection between the person and the room air is approximately 2 w/m2 â‹…â‹… k. what is the ratio of the thermal resistance due to convection to the thermal resistance due to radiation in the summer? what is the ratio of thermal resistances in the winter

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

What os the equation of the line described below written in slope-intercept form? the line passing through point (0,0) and parallel to the line whose equation is 3x+2y-6=0