Which is a derived unit?

a.) kilogram

b.) joule

c.) micrometer

d.) millimeter

What is the observed frequency of a siren with a frequency of 440 Hz moving towards you at 50 m/s? The speed of sound is 330 m/s.

Which factor affects elastic potential energy but not gravitational potential energy? spring constant acceleration due to gravity distance from a given position amount of matter in the object

Explain two ways that static and current electricity are different?

The siren of a fire engine that is driving northward at 30.0 m/s emits a sound of frequency 2000 Hz. A truck in front of this fire engine is moving northward at 20.0 m/s.

About 4.6 billion years ago, the solar system was nothing more than a cloud of gas and dust known as what? A. A solar universe B. A solar Orion C. A solar accretion D. A solar nebula

Which type of electromagnetic waves have longer wavelengths that the waves that make up visible light.

A charge of 11 mu or micro CC is 10 cm above the center of a square of side length 20 cm. Find the flux through the square.

A 12.0 khz, 16.0 v source connected to an inductor produces a 4.00 a current. what is the inductance?

The personal cost per smoker per year is estimated to be $2,500.

A tight rope walker traverses a wire with the aid of a balancing pole. The moment of inertia of the person about their COG (Iperson) is 15 kg m^2. The moment of inertia of the pole about its COG (Ipole) is 250 kg m^2.