Questions in Grade High-school

Questions in Grade High-school

[Done] For the Christmas dance, the dance committee needs three hours of music. Each song is an average of 3.5 minutes. How many songs do they need?

[Done] What is the mass of 0.01 mol of [tex]Na_2SO_4[/tex]?

[Done] What is the best way to punctuate the sentence? A. Roger Ebert writes E.T. is a movie full of surprises. B. Roger Ebert writes, E.T. is a movie full of surprises.” C. Roger Ebert writes “E.T. is a movie full of surprises.” D. Roger Ebert writes, “E.T. is a movie full of surprises.” E. Roger Ebert writes E.T. is a movie full of surprises.”

[Done] What is the mass of 2 moles of KBr and the mass of 0.1 moles of [tex]C_6H_{12}O_6[/tex]?

[Done] Using the subject "usted" and the verb in the imperative, tell your instructor three things he or she must do. Then tell your instructor two things he or she must not do. Provide your sentences in Spanish.

[Done] Will all the bulbs have the same brightness in a series circuit, regardless of how many there are? Does the number of bulbs affect their brightness?

[Done] Physics Help It is estimated that 1.0 kg of body fat will provide [tex]3.8 \times 10^7 \, \text{J}[/tex] of energy. A 60-kg mountain climber decides to climb a mountain 4000 m high. (a) How much work does the climber do against gravity in climbing to the top of the mountain? The answer for this is [tex]2.4 \times 10^6 \, \text{J}[/tex]. (b) If the body’s efficiency in converting energy stored as fat to mechanical energy is 25%, determine the amount of fat the climber will use up in providing the energy required to work against the force of gravity. The answer is [tex]0.25 \, \text{kg}[/tex]. I got (a) but I don't understand how to do (b).

[Done] For biological evolution to occur by way of natural selection, the trait being selected for need NOT: A. be heritable B. vary among individuals C. increase an individual's lifespan D. increase an individual's reproductive success

[Done] Divide 56 in a ratio of 5:3.

[Done] 1. Determine the inverse of \( y = 2(3)^{x+1} \). 2. Convert 1600 degrees to radian measure, in terms of \( \pi \) radians.