During physical activity of high intensity, your heart will beat at a percentage of its maximum rate. which range shows the correct percentages
during this type of activity?
a. 40%-50%
b. 50%-70%
c. 70%-85%
d. 85%-100%

Aquantity of gas has a volume of 1.5 m3 and an absolute pressure of 95 kpa. when the gas is compressed to a volume of 0.5 m3, what is the new absolute pressure of the gas? (assume that there’s no change in temperature.)

Asher cycles 12 miles in 16 hours. what is his speed?

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the