How long have simple machines been around?

Group of answer choices

A: thousands of years

B: 850 years

c: millions of years

d: hundreds of years

What is Applied Science?

Various factors to be considered in deciding the factor of safety?

What was the first prototype of the artificial tree like?

A football player attempts a 30-yd field goal. If he is able to impart a velocity u of 100 ft/sec to the ball, compute the minimum angle θ. for which the ball will clear the crossbar of the goal. (Hint: Let m = tan θ)

Two opposite poles repel each other

The pressure and temperature at the beginning of compression of an air-standard Diesel cycle are95 kPa and 300 K, respectively. At the end of the heat addition, the pressure is 7.2 MPa and thetemperature is 2150 K.

Explain two Types of bearing?

7 Single-use earplugs require a professional fitting before they can be used. A True B) False

Electric power is to be generated by installing a hydraulic turbine-generator at a site 138 m below the free surface of a large water reservoir that can supply water at a rate of 2400 kg/s steadily. Determine the power generation potential.

When the French horn plays with brass instruments, then it is played very softly to match the texture. True/False