Which of the following was a common life form during the Cambrian Period?

trilobite

bryozoan

land plant

cephalopod

Julius competes in the hammer throw event. the hammer has a mass of 7.26 kg and is 1.215 m long. what is the centripetal force on the hammer when it has a tangential speed of 31.95 m/s? the answer is rounded off to the nearest whole number.

Why should you exercise caution when taking a personality test? Some online tests may ask for too much personal information. Personality tests don't define exactly who you are forever. Some personality tests aren't that good. all of the above

We have a metal plate that has a circular hole with radius "R". if we raise the temperature of this plate, what happened with radius of hole? increasing, decreasing or stay constant?

Which describes the relationship between potential and kinetic energy of a ball thrown up in the air as it falls back to the ground? A. Gravitational potential energy increases; kinetic energy increases. B.

A floating boat has a weight of 100 N. What is the buoyant force on the boat?

When an ocean plate converges with another plate, what is created on the seafloor at the line of convergence?

Calculate the angle of refraction of 30.0° light shines from water into ice. The indices of refraction for water and ice are 1.36 and 1.31, respectively. A) 19.8° B) 31.3° C) 40.9° D) 64.0°

What is the length of a simple pendulum with a period of 2.0 s?

How many electrons are necessary to produce 1.0 c of negative charge? (e = 1.60 Ã 10-19 c) ?

A car is traveling at 64 ft/s when the brakes are fully applied, producing a constant deceleration of 18 ft/s2. What is the distance covered before the car comes to a stop? (Round your answer to one decimal place.)