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Physics
Physics
High School
Each gene controls the production of one or more specific ( Blank).
Physics
High School
A tuba creates a 4th harmonic of frequency 116.5 Hz. What is the frequency of the third harmonic? (Speed of sound = 343 m/s) (Unit = Hz )
Physics
College
the pencil has a shadow. is the pencil opaque or transparent?
Physics
High School
EASY QUESTION IM GIVING BRAINLIEST!! 20 PTS
Physics
College
In a solar system far, far away the sun's intensity is 400 W/m2 for an inner planet located a distance R away. What is the sun's intensity for an outer planet (in W/m2) located at a distance of 4 R from the Sun
Physics
High School
explain why the rate of diffusion of a gas decreases with decrease in temperature
Physics
College
A 1-kg ball is 12 m above the ground, with an initial velocity = 0 m/s.Use the following formulas[ KE = 1/2 xm x V2][P.E = mxgxh] . g =9.8 m/s2[ Mechanical energy = K.E + P.E]
Physics
College
Which action can knowing the "Three Rs lead a person to do?A) resolving conflictsB) helping one's family create a disaster planC)staying safe in a natural disasterD)protecting the environment
Physics
College
In a home stereo system, low sound frequencies are handled by large "woofer" speakers, and high frequencies by smaller "tweeter" speakers. For the best sound reproduction, low-frequency currents from the amplifier should not reach the tweeter. One way to do this is to place a capacitor in series with the 9.0 resistance of the tweeter; one then has an RLC circuit with no inductor L (that is, an RLC circuit with L = 0).What value of C should be chosen so that the current through the tweeter at 200 Hz is half its value at very high frequencies? Express your answer with the appropriate units.
Physics
College
A bowling ball and a baseball both roll across your foot at the same speed. The bowling ball hurts much more.Which law of motion is this?
Physics
College
Heat transfer in liquids or gases that happens due to currents of hot and cold is calledEntropyConductionConvectionRadiation
Physics
High School
Las ondas tienen elementos de posicin y temporales uno de ellos se define como, La distancia recorrida por una onda en un perodo se llama Opciones: Longitud de onda Frecuencia Perodo Velocidad
Physics
College
sample of pure boron contains only isotope X and isotope Y.A nucleus of X has more mass than a nucleus of Y.[o[4].[4] The sample is ionised, producing ions each with a charge of +1.6 x 10C.The specific charge of an ion of X is 8.7 x 10C kg".Calculate the mass of an ton of X.[1 mark]hmass of ion = kg[4].[2] Determine the number of nucleons in a nucleus of X.mass of a nucleon = 1.7 x 1077 kg[2 marks]hnumber of nucleons =[o[4].[3] Compare the nuclear compositions of X and Y.[2 marks][o[4].[4] lons of Y have the same charge as ions of X.State and explain how the specific charge of an ion of X compares with that of anion of Y.[2 marks]
Physics
Middle School
Biodiversity affects the sustainability of an ecosystem by A. always increasing competition for limited resources within the ecosystem.B. allowing the ecosystem to survive many changes.C. preventing the ecosystem from surviving many changes.D. always decreasing competition for limited resources within the ecosystem.
Physics
Middle School
1. When all the light spectrum colors travel together, they blend together as __________________ light. You do not see the individual __________. 2. Spectrum glasses separated the light waves into a ________of colors. When green, blue and red lights flash together what color do you see? ___________________ 3. The mass of the light from the flashlight was ________ grams. 4. The volume of the light shined into the graduated cylinder was____ mL
Physics
College
When a solid uniform sphere is spinning about an axis of rotation through its center, its rotational kinetic energy is K and moment of inertia I = MR2. A second solid sphere having twice the mass and twice the diameter of the first one is spinning about an axis through its center and has a twice the angular velocity of the first sphere. The rotational Kinetic energy of the second sphere is: 8K4K32K2KK
Physics
College
Determine a formula for the maximum height h that a rocket will reach if launched vertically from the Earth's surface with speed v0(v < vesc). Express in terms of v0, rE, ME, and G.
Physics
High School
When steam turns a turbine, what is the energy conversion? *1. Thermal to mechanical2. Electrical to mechanical3. Mechanical to chemical(pls help)
Physics
College
Sonya hears water dripping from the eaves of the house onto a porch roof. She counts 30 drops in 1.0 min.
Physics
High School
An elevator is rising up a vertical shaft in a skyscraper. Between the 12th and 20th floors, it travels at a constant speed. During this time period:1.) The only unbalanced force acting on it is air resistance. 2.) The forces acting on it are balanced so the net force is zero. 3.) The upward force is greater than the combined downward forces of gravity and air resistance, making it move upward. 4.) There are no forces acting on it so the net force is zero.
Physics
High School
A sports car accelerates at 4.3 m/s2. If the car exerts a force of 4106 N, what is the mass of the sports car?
Physics
High School
olir Q.No.la The unit of density is called derived unit, why?
Physics
High School
Energy can come from electricity, but itcan also come from waterfalsetrue
Physics
College
Can you help me with this?
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