Blue whales communicate with infrasound and insects communicate with ultrasound. Find (a) the SHORTEST infrasound wavelength a blue whale can make in 0°C (icy) water (Hint: If you want a short wavelength, do you want a higher or lower frequency for a given wave speed?) and (b) the LONGEST ultrasound wavelength an insect can make in (room temperature) air.

The human body stores chemical energy from digested food. some of the chemical energy is converted into mechanical energy when the body moves. which statement best supported by this information

In which situation is the acceleration of a car negative? question 5 options: a)the velocity of a car was 75 km/hr over 4 hours. b)the velocity of a car reduced from 50 km/hr over one minute. c)the velocity of a car increased from 40 km.h to 75 km/h over 15 minutes. d)the velocity of a car was 45 km/hr at 2: 00pm and at 4: 00pm its velocity was 85 km/ht.

Amaterial that provides resistance to the flow of electric current is called a(an) (1 points)