04/28/21

If a water wave vibrates up and down 26 times each second and the distance between water crests is 7.55 m, what is its wavelength?
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04/26/21

150 pounds of sugar were packed into 45 bags: some of 2lbs and some 5lbs. How many bags of each weight should there be?
we are supposed to use variables to solve this
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04/25/21

physics hw help

A 3kg object moving at 4 m/s encounters a 20 N resistive force over a duration of 0.20 seconds. The impulse experienced by this object is _____a)Intial momentum - final mometumb)5 N . sc)4 N/sd)24... more
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04/24/21

An aluminum wing on a passenger jet is 36 m long when its temperature is 22°C. At what temperature would the wing be 7 cm (0.07 m) shorter?
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04/24/21

is the emergent and incident ray angle equal in all triangular prism as well as the 2 angle of refraction all times or not necessarily at all? can someone help me aid with this confusion of mine.
Note: it was using the olabs simulation by amrita university which has very much inaccuracy of its protractor in the simulation
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04/24/21

answer the question below
For a frequency of 880Hz with an amplitude of 7 ×10⁻⁴ m and 9 ×10⁻⁴ m in air calculate the intensity. The density of air at 20°C is 1.2 kg/m³ and the speed of propagation in the air is 343m/s.
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04/16/21

The​ half-life of radium
The​ half-life of radium is 1690 years. If 20 grams are present​ now, how much will be present in 50 ​years?
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04/15/21

6) What is the direction of the electric field at point P (see diagram)? a) right b) left c) up d) down
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04/15/21

8) Positive charges move from a) High voltage to low voltage b) Low voltage to high voltage c) High resistance to low resistance d) Low resistance to high resistance

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04/15/21

11) Two 4x10-6 C charges are separated by 0.2m. What will be the electric force between them? a) 3.6N b) 3600N c) 0.72N d) 720
show the calculation of the problem
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04/15/21

13) According to Ohm’s law, if you double the resistance, the current will be a) Twice as large b) ½ as large c) Stay the same d) Increase and then decrease e) Ohms
Show the reasoning why you think it is what you think it is!
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04/15/21

15) A current of 3A is measured through a light bulb when connected to a 120V outlet. What is the resistance of the light bulb? a) 0.025Ω b) 40Ω c) 120Ω d) 360Ω
Show the solution of the work
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04/15/21

12) According to Ohm’s law, if you double the voltage, the current will be a) Twice as large b) ½ as large c) Stay the same d) Increase and then decrease

Give the reason for the answer and answer the question
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04/15/21

I need help solving this equation.. Can anyone help me? I need to be able to figure this out so I can move on. I would really appreciate it!
A gas sample initially has a volume of 0.2L and a temperature of 40.2K. If the other gas parameters are kept constant, and the volume is adjusted to 2.4L, what is the new temperature in K?
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04/14/21

2. A 0.650-kg mass is attached to a spring of spring constant 13.0 N/m along a horizontal frictionless surface. The object oscillates in simple harmonic motion and has an amplitude of 13.0 cm.
a. What is the maximum speed of the mass? b. What is the total energy of the system? c. What is the speed of the object at a displacement of 6.5 cm?
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04/13/21

A 15.0 Ω resistor is hooked up in parallel with a 13.0 Ω resistor and a 12.0 Ω resistor. The circuit is powered by a 45.0 V battery.
a)   Draw a labeled circuit diagram for the circuit described.b)   Calculate the equivalent resistance.c)   Calculate the current passing through each resistor in the circuit.
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04/12/21

I need help with maths. How do i insert that image? Its trigonometry.

Help. I need help with maths. How do i insert that image? Its trigonometry.
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04/12/21

Calculate the amount of force on a spring if its spring constant (k) is 30 N/m, and the distance of extension (x) is 0.4 meters
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04/12/21

what are two numbers that multiply to equal -35 but add to equal +2
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04/12/21

A radioactive substance decays from 85mg to 22.1mg in 25 years according to the exponential decay model y=ae-bx, where a is the initial amount and y is the amount remaining after years.  
A radioactive substance decays from 85mg to 22.1mg in 25 years according to the exponential decay model y=ae-bx, where a is the initial amount and y is the amount remaining after years. Find... more
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04/10/21

For Torricelli's law (where the hole is in the side of a cylindrical tank), should tank radius be the same throughout? Is it important to consider? Why or why not?
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04/10/21

physics question
You load a 7.6g AAA battery into your new mini penlight flashlight. The spring at the bottom of the battery compartment has a k=89 and you compress it 2.0 cm as you screw on the cap. At camp you... more
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04/09/21

In the following wire, conventional current is flowing to the right. In which direction will the compass point?
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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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04/08/21

Specific Heat/Heat Transfer
Glass Liquid Water Oxygen Gas Wood Concrete Gold Carbon Dioxide Gas rank the following substances in the order of their specific heats from lowest to highest.
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