Find the velocity of an electron
Find the velocity of an electron emitted by a metal whose threshold frequency is 2.15×1014 {rm s^{-1}} when it is exposed to visible light of wavelength 4.76×10-7 {rm m}.
Expected delivery within 24 Hours
A baseball is hit with a speed of 27.0 at an angle of 47.0. It lands on the flat roof of a 12.0 -tall nearby building. If the ball was hit when it was 1.2 above the ground, what horizontal distance does it travel before it lands on the building?
First determine the number of moles of rm Na^+ using the given molarity and volume. Next, use the chemical formula to determine the number of moles of rm Na_3PO_4 needed. Finally, convert moles to grams using the molecular weight of the compound.
For a solution having 1 x 10-3 equivalents/liter total alkalinity (contributions from HCO3-, CO32- and OH-) at [H+]=4.69 e-11, what is the percentage contribution to the alkalinity from CO32-?
Assume that a seismically excited system is accurately modeled by a mass attached to the ground by a spring and a damper in parallel. You need to determine whether the weld connecting the spring to the mass will hold
What amount of energy is required to completely ionize 6.2 grams of carbon atoms in the gas phase (C(g)) if the ionization energy of C(g) is 1086 kJ/mole?
A solid sphere (I = 0.4MR2) of radius 0.06 m and mass 0.50 kg rolls without slipping 14m down a 30º inclined plane. At the bottom of the plane, the linear velocity of the center of mass of the sphere is approximately?
A bright orange ceramic "Fiestaware" plate is found to have an activity of 12.49 disintegrations per second (Becquerels or Bq), due to the uranium-238 used in the pigment. The half life for decay of uranium-238 is 4.5 x 109 years. Assuming that ur
You have researched a new type of switch and proved that upgrading your switches to this model is feasible. What step do you take next before replacing your old switches?
1943291
Questions Asked
3,689
Active Tutors
1445348
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
Many children are being exposed to violence at home through direct abuse or witnessing their caregivers commit an act of violence on each other.
Insert citations in APA format and list reference in Exposure to violence at home-physical, sexual, or emotional abuse, coercive control, or witnessing partner
Thank you for your response to my post. It's really important for substance abuse counselors, especially those working with kids and teens
Engage in a literature review that supports and provides a rationale for selecting one counselling theoretical orientation.
For this week's discussion, I chose to focus on one of the most pervasive threats to data integrity: response bias.
To identify the components of giftedness in preteen children, the qualitative and quantitative methods I would use would include surveys
Each person, regardless of intersecting identities, brings something unique and different to the role-play. In reflecting back, were you aware of differences