1,302 Answered Questions for the topic physical science

Physical Science Physics Physics C

07/12/21

Slove the math step by step and also give the formula..
If two resistors R1 and R2 are connected in parallel, the equivalent resistance becomes, 𝑅𝑒𝑞= 𝑅1𝑅2𝑅1+𝑅2 . If 𝑅1=10±0.5 Ω 𝑎𝑛𝑑 𝑅2=4.7±0.2 Ω, find the percentage error in the calculation of the... more
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Physical Science

07/06/21

Which of the following can occur as a result of a chemical reaction?
select all that apply Energy is absorbed (endothermic)  new substances are formed from the old substances.  Energy is created or destroyed Energy is released (exothermic) 
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Physical Science

06/11/21

If you travel 500 kilometers in 5 hours, your average speed is?
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Physical Science Science Chemical Reaction

06/10/21

Adipic acid, H2C6H8O4, used to produce nylon, is made commercially by reaction of Cyclohexane (C6H12) and oxygen gas (O2).
a. write the balanced chemical equation for the given reaction above.b. is the reaction exothermic or endothermic? Explain.c. how many grams of Adipic acid will be formed if 25.0g cyclohexane... more
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Physical Science Physics

06/10/21

Why is understanding motion so important? Be sure to answer in your own words.
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06/09/21

Adipic acid, H2C6H8O4, used to produce nylon, is made commercially by reaction of Cyclohexane (C6H12) and oxygen gas (O2). Please show the work for A-F.

a. write the balanced chemical equation for the given reaction above.b. is the reaction exothermic or endothermic? Explain.c. how many grams of Adipic acid will be formed if 25.0g cyclohexane is... more
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Physical Science Chemistry Physics Astronomy

06/02/21

Electricity, resistance, current, voltage, physics
a circuit operates at 1000 watts, within the circuit we have a 10 ohm, 20 ohm, and 40 ohm resistors.a) if the resistors are connected in parallel, what would their equivalent resistance be? b)... more
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Physical Science Math Science Calculus

05/29/21

Please Read Question Below!
A member of the basketball team jumps straight up and their center of mass has a speed of 3.32 m/s as they leave the court. How high above this point is their center of mass at the following times?... more
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Physical Science Math Science Calculus

05/28/21

Please Read Question Below!
A box proceeds along the x-axis and the figure below shows a record of its velocity as a function of time. Every gridline along the vertical axis corresponds to 2.00 m/s and each gridline along the... more
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Physical Science

05/21/21

please i need the answers it’s for physical science
Hydrogen & oxygen react chemically to form water. How much water would form if 10.5 grams of hydrogen reacted with 36.9 grams of oxygen
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Physical Science Science Physics Ap Physics

05/21/21

physics question
A tangential force of 360 N acts for a time of 5.0 seconds at the edge of a potter’s wheel (solid cylinder or disc) with radius 50.cm and mass 45kg. What is the change in its angular velocity?[ans:... more
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Physical Science Science

05/19/21

Which of the following are equal to -40 F? check all that apply.

A. 223 KB. -80 CC. 200 KD. -40 C
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Physical Science Chemistry Physics Astronomy

05/19/21

Potential energy/velocity
roller coaster 1: Potential energy: 1,617,000J, mass 5,500kgRollercoaster 2: potential energy: 2,205,000J, mass: 5,000kggravitational constant: 9.8 roller coaster 1 has no kinetic energy, and at... more
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Physical Science

05/17/21

Frieda makes a solution that contains 5.7 g of KCl dissolved in 200 g of water. What would be your percent by mass of KCl in the water solution?

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Physical Science Chemistry

05/14/21

A plot of ln(Keq) vs 1/T had the following parameters: slope = 8744 K-1 y-intercept = -61.91 Determine the value of Δ Δ Horxn and Δ Δ Gorxn for this reaction at 298 K.
The reaction ClO(g) + ClO(g) ⟷ ⟷ ClOOCl(g) is important in polar stratospheric chemistry because the ClO dimer sequesters chlorine in the polar vortex that forms over Antarctica during the southern... more
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Physical Science Chemistry Physics Physics B

05/11/21

Coulombs law Physics
FORMULA: K*Q1*Q2/R^2keep in mind: the charge of a proton (and the negative charge of an electron) is equal to 1.60218 * 10^-19 C1. What is the force between a proton and an electron which are 1... more
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Physical Science Science Physics Photography

05/07/21

Please provide guidance for the problem. What should I do to solve the problem about new unit pixel design?
Please provide guidance for the problem. What should I do to solve the problem about new unit pixel design? A hypothetical client working for a technology company demands a new design for their new... more
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Physical Science

05/05/21

which statement describes the difference between a metallic bond and a hydrogen bond?
a. a metallic bond forms between positive ions and freely moving electrons surrounding them, while a hydrogen bond forms when two polar molecules are attracted to each otherb. a metallic bond forms... more
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Physical Science Chemistry Physics Physics B

04/27/21

First law of thermodynamics physics basic
Can someone help me with any of these?U=Q-WNote: if thermal energy is lost by the system or if work is done to the system, Q or W is negative. 50J of thermal energy is added to a system, 100J of... more
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Physical Science Science Physics Ap Physics

04/10/21

physics question
A 25 g pellet is placed in the barrel of a toy gun and is propelled by a spring with a spring constant of 50. N/m. The gun is held vertically, the spring is compressed 20. cm and then released... more
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Physical Science

04/08/21

If a 221 g copper wire generates 370 calories, what is its change in temperature (in Kelvin) when this occurs?
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Physical Science Science Physics Physics B

04/01/21

Urgent physics help

An electron has mass m=9.1x10-31 kg and charge q = 1.6x10-19 C. In an experiment at Oak Ridge National Laboratory, an electron is accelerated from rest by moving through the electric field between... more
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Physical Science Science Physics Physics B

04/01/21

Urgent physics help
The next three questions relate to this scenario.An electron has mass m=9.1x10-31 kg and charge q = 1.6x10-19 C. In an experiment at Oak Ridge National Laboratory, an electron is accelerated from... more
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Physical Science

03/31/21

Victoria gets a sunburn from which of the following energy transfers?
A. radiationB. conductionC. convection
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Physical Science Science Chemistry

03/29/21

What is the rate equation given this data table?
A chemist does a reaction rate analysis on the following reaction:2NO (g) + O2 (g) → 2NO2 (g)She collects the following data:Trial Initial [NO] (M) Initial [O2] (M) Instantaneous Rxn Rate (M/s)1 ... more
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