Which force is always attractive and has a very small range? strong nuclear weak nuclear gravitational electromagnetic

The energy of microwaves is less than the energy of ultraviolet light.Which comparison of the energies of electromagnetic waves is correct? X-rays have lower energy than gamma rays because X-rays have higher frequencies. X-rays have lower energy than gamma rays because X-rays have shorter wavelengths. Visible light has higher energy than infrared light because visible light has longer wavelengths. Visible light has higher energy than infrared light because visible light has higher frequencies.

Which are characteristics of electromagnetic waves?Check all that apply. They travel only through matter. Waves with a higher frequency have a shorter wavelength. ) Waves with a higher frequency have a longer wavelength. They all move at the same speed. They can travel through space.

A block is pulled by two horizontal forces. The first force is 115 N at an angle of 75.0^circ and the second is 213 N at an angle of 295^circ What is the y-component of the total force acting on the block? overrightarrow (F_(y))=[?]N

A 0.50-kg block attached to an ideal spring with a spring constant of 80N/m oscillates on a horizontal frictionless surface.When the spring is 4.0 cm longer than its equilibrium length, the speed of the block is 0.50m/s The greatest speed of the block is: 0.32m/s 0.23m/s 0.93m/s 0.78m/s 0.55m/s

Which statement best describes how waves carry energy? Energy moves from one place to another through the wave. Energy increases as it moves through the wave. Energy is completely consumed by the beginning of the wave. Energy builds through the wave and is released at the end.

Which example would contain only longitudinal waves? a crowd doing the wave at a sporting event an ultrasound that transmits soundwaves the waves formed by the ocean playing the guitar strings

According to the kinetic molecular theory, the average kinetic energy of gas particles depends on which factor? volume pressure temperature number of particles

9. Jenny is sitting on a sled on the side of a hill inclined at 15^circ What force is required to keep the sled from sliding down the hill if the combined weight of Jenny and the sled is 90 pounds? (Show work)

In the Pixar movie Up a man named Carl Fredricksen decides to sail away in his house by attaching thousands of helium balloons. Lets assume his house has a mass of 4.71cdot 10^4kg What minimum volume of helium would be needed to support a house of this weight? The density of helium is 0.164kg/m^3 and the density of air is 1.23kg/m^3

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Newton's laws of motior fail: when dealing with extremely low masses. for objects with extremely large masses. when using atomic clocks rather than stopwatches. at speeds significantly less than the speed of light. in helping us understand most of the everyday world.

A radioactive substance decays exponentially. A scientist begins with 140 milligrams of a radioactive substance. After 24 hours 70 mg of the substance remains. How many milligrams will remain after 27 hours? $\square $ mg Give your answer accurate to at least one decimal place Question Help: Video

The branch of biomechanics that deals with the aspects of moving systems is known as dynamics. kinetics. mobility. kinematics.

When a forklift is loaded, where is its center of gravity? A. Under the operator B. At the center of the forklift C. Varies based on the combined centers of gravity of the forklift and the load D. At the center of the forks

Which of these statements is most likely correct about a weak nuclear force? (2 points) It binds electrons and protons. It is a repulsive force. It is an attractive force. It binds protons and neutrons.

Which side of the electromagnetic spectrum has shorter waveiengths? $\square $ Which side of the electromagnetic spectrum has higher energy? $\square $ Which side of the electromagnetic spectrum has higher frequencies? $\square $ blue

Living and Nonliving substances obey all of the answers the 1st law of thermodynamics. the 2nd law of thermodynamics. the law of gravity.

Physics is explicitly involved in studying which of these activities? A. the mixing of metals to form an alloy B. the metabolic functions of a living organism C. the motion of a spacecraft under gravitational influence D. the depletion of the atmospheric ozone layer due to pollutants E. the killing of cancerous cells by radiation therapy

Outdoors, shadows are longest at what time of day? Midnight Sunrise and sunset Noon 10 a.m.

Whose laws of motion became the basic building blocks for our understanding of the functioning of the universe? Johannes Gutenberg Martin Luther Isaac Newton Francis Bacon Rewatch