<1, 2, 3> x (7.6 <-5.3, -4.8, -3.9>) x stands for cross product
What does the above notation mean?
Multiply 7.6 to each component of the velocity vector to obtain the linear momentum vector. Find the cross product of the position vector and the linear momentum vector. That gives you the angular momentum vector.
7.6 * -5.3 = -40.28
7.6 * -4.8 = -36.48
7.6 * -3.9 = -29.64
Cross Multiplication
-40.28 1 = -80.56 - (-36.48)
-36.48 2
-40.28 1 = -120.84 - (-29.64)
-29.64 3
-36.48 2 = -109.44 - (-59.28)
-29.64 3
answer is (-91.2) - (50.16) + 117.04 = -24.32
Answer:The lower the refractive index, the faster the velocity of light. Medium A has the smaller refractive index. Light will travel faster through medium A at a velocity equal to the speed of light divided by the refractive index.
Explanation:
THere ya go ! :)
Answer:
Good nutritional habits are important to live a long and healthy life. Unhealthy eating habits like having too much sugar, salt, or fat in your diet can raise your risk for certain diseases. Not eating enough or eating too much both have different effects. Healthy eating can lower your risk for heart disease, stroke, diabetes, and other health conditions. A well balanced diet that satisfies your needs is sure to improve your way of life.
Explanation:
kinda just re-worded the stuff I saw on google
The law of reflection states that when a ray of light reflects off a surface, the angle of incidence is equal to the angle of reflection.
Answer:
( I SUGGEST THAT YOU READ EVERYTHING ) Hydropower does not pollute the water or the air. However, hydropower facilities can have large environmental impacts by changing the environment and affecting land use, homes, and natural habitats in the dam area.
Explanation:
Nowadays, huge power generators are placed inside dams. Water flowing through the dams spin turbine blades (made from metal instead of leaves) which are connected to generators. Power is produced and is sent to homes and businesses. Hydropower is the most important and widely-used renewable source of energy. Most hydroelectric power comes from the potential energy of dammed water driving a water turbine and generator. The power extracted from the water depends on the volume and on the difference in height between the source and the water's outflow. Reservoirs and hydropower are often thought of as “clean energy” because they don't burn fossil fuels to produce electricity. Research released within the last year has confirmed that dams and reservoirs are a major source of greenhouse gas emissions driving climate change. Because hydropower plants can generate power to the grid immediately, they provide essential back-up power during major electricity outages or disruptions. In addition to a sustainable fuel source, hydropower efforts produce a number of benefits, such as flood control, irrigation, and water supply. There are numerous environmental consequences of damming water, flooding entire areas, creating massive reservoirs, changing water flow, blocking the natural course of rivers, and constructing power lines and roads. There are only a limited number of places where these power plants can be built. Hydroelectric power has many advantages: it produces very little pollution; it is affordable; and the plants are energy-efficient, require little maintenance and are easy to stop and start. Besides being inexpensive, nuclear power produces little air pollution or greenhouse gases and can be contained in a small space.