HELP PLEASE 01.04 Activity and Heart Rate Assignment Instructions Search the Internet for two online heart rate calculators. You can use the search term "heart rate calculator." Determine your target heart rate zone, and then copy and paste these questions into a document. Using complete sentences, type in your answers below the questions. 1. Determine your heart rate by taking your radial pulse and then your carotid pulse. • What was your heart rate in each instance? Explain which artery you found easier to use and why. 2. Which two websites did you use to determine your target heart rate? 3. What was your target heart rate zone on each of these websites? Were the zones the same? 4. Do you think the range for your target heart rate zones identified by these websites is reasonable? Why or why not? 5. How does understanding your target heart rate zone help you improve your physical fitness?​

Air is held within a frictionless piston-cylinder container, which is oriented vertically. the mass of the piston is 0.45 kg and the cross-sectional area is 0.0030 m2. initially (state 1) the pressure of the gas is sufficient to support the weight of the piston as well as the force exerted by the atmospheric pressure ( 101.32 kpa). the volume occupied by the air within the cylinder in state 1 is 1.00 liter. one end of a spring (with spring constant k = 1000 n/m) is attached to the top of the piston, while the other end of the spring is attached to a stage that can move vertically. initially the spring is undeflected and therefore exerts no force. then the stage is then moved quasistatically downward a distance of 10.0 cm, at which point the system reaches state 2. the piston-cylinder is not insulated; rather it remains in diathermal contact with the surroundings, which are at a constant temperature of 300 k. what is the change of pressure within the container?

Asmall electric heater, immersed in 80g of water in a calorimeter of 40j/k raises the temperature from 10.5 degree celsius to 25 degree celsius in 12 minutes. using the same apparatus with 50g of oil instead of water, it is found that the temperature of oil rises from 7 degree celsius to 27 degree celsius in 10 minutes. find specific heat capacity of the oil.

What is reflection, what is refraction, and what is diffraction. what some similarities or differences between the three.