Substances that allow athletes exercise longer are called

A. drugs

B. carbohydrates

C. proteins

D. ergogenic aids

A body of mass 5 kg has a velocity 20 MS -1 its Momentum is

When a bow is stretched back and an arrow is shot what type of energy conversion has occured

A group of students is asking people whether they use plastic bags. what are the students doing? a. stating a problem b. analyzing data c. collecting data d. drawing a conclusion

Which letter indicates the wavelength of the wave? A. A B. B C. C D. D

How will the speed of a sound wave change if the temperature of the medium rises

1. Which of the following lists minerals in order of hardness from lowest to highest on the Mohs hardness scale? A. Gypsum, apatite, topaz, feldspar, corundum B. Fingernail, penny, glass, topaz, diamond C.

The mass of a subway car and passengers is 45,500 kg. If it's acceleration as it leaves a station is 0.6 m/s2, what is the net force (in N) acting on it?

Which of the following determine an object's velocity? A. speed and direction B. direction and acceleration C. speed and mass D. speed, direction, and acceleration

The following statements regarding the exhaust gas recirculation (EGR) valve are all correct except: Low restriction exhaust systems will have no effect on EGR system operation. B.

A 10.0 V battery is connected to a 120-ohm resistor. Ignoring the internal resistance of the battery Calculate the power delivered to the resistor.