Awater bed weighs 1025 n, and is 1.5 m wide by 2.5 m long. how much pressure does the water bed exert if the entire lower surface of the bed makes contact with the floor?
a.
3.6 x 102 pa
c.
1.2 x 103 pa
b.
2.7 x 104 pa
d.
2.7 x 102 pa

Consider two metallic rods mounted on insulated supports. one is neutral, the other positively charged. you bring the two rods close to each, but without contact, and briefly ground the the neutral rod by touching it with your hand. show answer correct answer what would be resulting charge (if any) on the initially neutral rod

Your target variable is δf, the magnitude of the difference in frequency between the waves emitted from the sonar device and the waves received by the device after reflecting off the whale. write an expression for δf in terms of the relevant frequencies using the subscript notation introduced above.

Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.