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 happens to a commercial airline at cruising altitude if the pilot does not touch the throttles? 1. It slows down 2. It continues to climb 3. It continues to descend 4. It speeds up

A 3-oz serving of roasted, skinless chicken breast contains 140 Cal, 27 g of protein, 3 g of fat, 13 mg of calcium, and 64 mg of sodium.

A geothermal power plant uses geothermal water extracted at 150°C at a rate of 210 kg/s as the heat source and produces 8000 kW of net power. The geothermal water leaves the plant at 90°C.

Which of the following material properties varies with temperature? a) - density b) - viscosity c) - electrical resistance d) - all of the above

3. Technician A says that on-board self-diagnostics test mode procedures should be conducted on a cold engine. Technician B says that many diagnostic trouble codes (DTCs) will monitor items only when the engine control system is in closed loop.

Which of the following statements regarding the dermis is FALSE? The dermis contains a large amount of fat tissue. The dermis is composed of fibrous connective tissue. The dermis is also called the corium. The dermis houses sensory receptors.

Let r be a bank's interest rate in percent per year (APR). An initial amount of money P, also called as principal, will mature to an amount of P (1+r/100) ^n after n years have passed.

Fluid power is a. The technology that deals with the generation, control, and transmission of power-using pressurized fluids b. muscle that moves industry. c. used to push, pull, regulate, or drive virtually all the machine of modern industry d.

6. PVC boxes are primarily used in new construction because it is simple to them to rafters or studs.

What's the monomer? Show the structure.