12 kg of gold at 90°C cools to 20°C. How much heat is
given off? I’ll mark brainliest

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?

The particle p starts from rest at point a at time t = 0 and changes its speed thereafter at a constant rate of 2.8g as it follows the horizontal path shown. determine the magnitude and direction of its total acceleration (a) just before point b, (b) just after point b, and (c) as it passes point c. state your directions relative to the x-axis shown (ccw positive) and choose the angle with the smallest magnitude.

Which of the following statements accurately describes the sign of the work done on the box by the force of the push? a. positive b. negative c. zero