Your friend, who is age 15 and has a resting heart rate of 70, wishes to start a jogging program. What would you suggest as a proper starting target heart rate?

138

115

178

155

A long pipe of outer radius R 1 = 3.70 cm and inner radius R 2 = 3.15 cm carries a uniform charge density of 1.22 mC/m 3.

What is the primary cause of surface ocean currents? A. wind B. salinity C. temperature D. the Coriolis effect

What are three scales that seimologists use to analyze earthquakes. and what does each measure?

How is reflection of light evident in nature?

Electromagnetic waves with a short wavelength occur at a (blank) frequency and are (blank) energetic. A. high; less B. high; more C. low; more D. low; less

Two energy resources that do not depend on the sun's energy

How much heat is givne out when 6.0g of water freezes at 0 degrees celcius the heat of fusion of water is 80.0 cal/g?

Which statement describes why ocean currents are considered convection currents? A) Warm water moves counterclockwise in the northern hemisphere B) Warm water rises and cold water moves in to replace it.

What kind of waves require a medium to travel? Question 6 options: Light Waves Mechanical waves All waves need a medium to travel Electromagnetic waves

During takeoff, a plane accelerates at 4 m/s and takes 40 s to reach takeoff speed. What is the velocity of the plane at takeoff?