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Questions in physics

[Answered] Ohm's law is V=IR, power is P=IV. In this question, the voltage powering a circuit is the due date month while the current is the due date day. For example, if the due date is 7/2 then the circuit has 7 Volts with 2 Amps for voltage and current, respectively. Do not use 7 Volts and 2 Amps unless the due date is 7/2. Be sure to include units in responses. 1) Write the voltage and current based on due date as described above. 2) Given the voltage and current in part 1) what is the resistance of the circuit? 3) What is the power exhibited in this circuit? (V-A would be units of Watts)

[Answered] For hand and arm protection from electrical hazards, what should be used? A. Plastic gloves and sleeves B. Leather gloves and sleeves C. Rubber gloves and sleeves D. Cotton gloves and sleeves

[Answered] A liquid that occupies a volume of 9.0 L has a mass of 7.2 kg. What is the density of the liquid in kg/L? density = [?] kg / L Record your answer to the hundredths place.

[Answered] The position function of a particle is given by [tex]$s=t^3-10.5 t^2-2 t, t \geq 0$[/tex]. When does the particle reach a velocity of [tex]$52 M / s$[/tex]? The particle reaches a velocity of [tex]$52 M / s$[/tex] when [tex]$t=$[/tex] _____ seconds.

[Answered] An SUV is traveling at a speed of $18 m / s$. If the SUV has a mass of $1,550 kg$, what force must be applied to stop it in 8 seconds? A. -2.25 N B. $-2,700.0 N$ C. $-3,487.5 N$ D. $-4,030.7 N$

[Answered] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Answered] Assertion: The kinetic energy of the photoelectrons is directly proportional to the intensity of incident light. Reason: The rate of emission of photoelectrons is inversely proportional to the intensity of incident light. Assertion: Angular momentum of an electron in any orbit is given by angular momentum [tex]=\frac{n \cdot h}{2 \pi}[/tex], where [tex]n[/tex] is the principal quantum number. Reason: The principal quantum number, [tex]n[/tex], can have any integral value.

[Answered] Select the best answer for the question. 15. A car with two people traveling down the road has a mass of 100 kg and a velocity of 5 m/s. The car pulls over and picks up two people. The mass of the car is now 150 kg. What's the new momentum if the velocity stays the same? A. 500 kg-m/s B. 750 kg-m/s C. 250 kg-m/s D. 1,250 kg-m/s

[Answered] An electric kettle uses 378,000 joules of energy to boil 1 liter of water. Express this energy using correct scientific notation. [tex]$[?] \times 10^{[?]} \text { joules }$[/tex] Enter the coefficient for the first blank and the exponent for the second blank. Coefficient (green)

[Answered] A man walks 400 m [E20°N], then 500 m [N20°W], then 300 m [W31°S], and finally 400 m [S13°E]. Find his resultant displacement.