El Niño occurs every seven years without fail. True False

Define the emission spectrum.

If the volume of your steel paper clip was 2cm2 what is its density

The fastest growing plant on record is the Hesperoyucca whipplei. Suppose a plant of this type grows 2.6 m in 14 days. What is its growth rate in micrometers per second?

How can you determine the number of covalent bonds an element can form?

An object hangs from a spring balance. The balance registers 32 N in air, 22 N when this object is immersed in water, and 27 N when the object is immersed in another liquid of unknown density. What is the density of that other liquid

The net force acting on an insect falling downward at constant velocity is

Which statement best compares the accelerations of two objects in free fall? O The heavier object has a greater acceleration.

A series RCL circuit includes a resistance of 280, an inductive reactance of 508, and a capacitive reactance of 315. The current in the circuit is 0.312 A.

A ray in benzene has a critical angle of 41.8 deg when trying to enter air. What is the index of refraction for benzene?

An elevator has mass 600 kg, not including passengers. the elevator is designed to ascend, at constant speed, a vertical distance of 20.0 m (five floors) in 16.0 s, and it is driven by a motor that can provide up to 40 hp to the elevator.