**Answer:**

Impulse =14937.9 N

tangential force =14937.9 N

**Explanation:**

Given that

Mass of car m= 800 kg

initial velocity u=0

Final velocity v=390 km/hr

Final velocity v=108.3 m/s

So change in linear momentum P= m x v

P= 800 x 108.3

P=86640 kg.m/s

We know that impulse force F= P/t

So F= 86640/5.8 N

F=14937.9 N

Impulse force F= 14937.9 N

We know that

v=u + at

108.3 = 0 + a x 5.8

So tangential force F= m x a

F=18.66 x 800

F=14937.9 N

Answer: B. thermocouple measures temperatures at the tip and the thermistor at the dimple.

Explanation:

A thermistor is a temperature-sensitive resistor, whilst a thermocouple generates a voltage proportional to the temperature. Thermocouples can work at much higher temperatures than thermistors. They are commonly used for temperature control in heating systems.

Answer:

See explaination

Explanation:

Please kindly check attachment for the step by step solution of the given problem.

Answer:

Removal of the safety ground connection on equipment can expose users to an increased danger of electric shock and may contradict wiring regulations. ... If a fault develops in any line-operated equipment, cable shields and equipment enclosures may become energized, creating an electric shock hazard.

**Answer:**

-4.6431 kW

**Explanation:**

Given parameters:

kg/s

kJ/kg·K

° C

Let the work done on the fan be = -300 W = -0.3 kW

Let the heat loss by air from the duct be = -300W = -0.3 kW

We are asked to find the power rating of the electric resistance heating element,

Energy-Balance equation for the system is:

kW

Here, (-) sign means work done on the system.