Scientists use what chart to compare the hardeness of minerals

Exploring floating and sinking

Did you detect a difference in the radiation levels between the intact smoke detector and the americium-241 removed from the smoke detector? if so why do you think the smoke detector is designed with that difference?

A rectangular tank that is 4 feet long, 2 feet wide and 15 feet deep is filled with a heavy liquid that weighs 60 pounds per cubic foot. In each part below, assume that the tank is initially full. Your answers must include the correct units.

Which products rely on the ability of ionic compounds to conduct electricity?

What is the resistance of a resistor if the potential difference across the resistor is 20.0 V when a current of 10.0 A flows through the resistor?

A sound wave has a frequency of 1,395 Hertz. All sound waves in air travel at 343 m/s. Find the wavelength of the sound wave. what's the answer?

Which factor will affect the light-gathering power of a telescope? A. change in the focal length B. change in the diameter of the objective C. change in the angle of the objective D. change in the elevation of the telescope E.

What is the acceleration of a 30.0-kg go kart if the thrust of its engine is 300.0 N?

Which of the following correctly compares a scientific investigation to a demonstration

You push a 45 kg wooden box across a wooden floor at a constant speed of 1.0 m/s. The coefficient of kinetic friction is 0.25. Now you double the force on the box. How long would it take for the velocity of the crate to double to 2.0 m/s