09/20/23

No side groups are involved in 2° structure H-bonding. Which atoms are directly involved in α - helix and β -sheet H-bonding?

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09/20/23

Explain why the folded structure is more thermodynamically favored (i.e., stable) in an aqueous environment than the unfolded structure.

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09/20/23

Projectile Motion at an Angle
" The best leaper in the animal kingdom is the puma, which can jump to a height of 3.7 m when leaving the ground at an angle of 45°. With what speed must the animal leave the ground to reach that... more
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09/20/23

on the moon, where the local gravity has a magnitude of g=1.6 m/s^2, an astronaut jumps off the edge of a crater rim. It takes her 7.2 seconds to free fall to the crater floor.
On the moon, where the local gravity has a magnitude of g=1.6 m/s^2, an astronaut jumps off the edge of a crater rim. It takes her 7.2 seconds to free fall to the crater floor.a) How high is the... more
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09/20/23

A cheetah is hiding in the grass. IT spots a zebra and bursts to a top speed of 20 m/s in a space of 48 meters.
A cheetah is hiding in the grass. IT spots a zebra and bursts to a top speed of 20 m/s in a space of 48 meters.a) What is the acceleration of the cheetah?b) how long does it take the cheetah to... more
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09/20/23

A running back start 10 yards beind the line of scrimmage (xi=-10 yds i). He runs forward at +5 yds/s until reaches a point 25 yards past the line.

A running back starts 10 yards behind the line of scrimmage (xi=-10 yds i). He runs forward at +5 yds/s until reaches a point 25 yards past the line. What is the running back's displacement and how... more
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09/20/23

Activation Energy Diagrams│Please Help!
Diagram Link: https://assets.learnosity.com/organisations/154/25171169-48e5-4503-8ad7-555ad1d590df.PNGFill in the blanks. The activation energy is ___ KJThe reaction is _____ (endothermic or... more
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09/20/23

Activation Energy Diagrams│Please Help!
For the following diagram, select all statements that are true.Diagram Link: https://assets.learnosity.com/organisations/154/1b178e16-4f43-48fb-807e-ab2e138b23c8.PNGThe reaction is endothermic.The... more
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09/19/23

Balancing Chemical Reaction Equations │Please Help!
Magnesium (Mg) reacts with oxygen (O2) producing magnesium oxide (MgO).a. Write the skeleton reaction equation (just show reactants and products with the arrow.)b. Balance the chemical reaction.c.... more
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09/19/23

Balancing Chemical Reaction Equations│Please Help!
Drag and drop the coefficients to balance this equation:___C6H6 + ___O2 ==> ___CO2 + ___H2OAnswer Box:1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
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09/19/23

Calculate the work done by gravity as a 5.6 kg object is moved from A to B in the figure(Figure 1) along paths 1 and 2. Enter your answers numerically separated by commas
https://session.masteringphysics.com/problemAsset/2326540/2/Walker.8.4.jpg
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09/19/23

A 1.3 kg block is held against a spring of force constant 2.0×104 N/m , compressing it a distance of 0.15 m. How fast is the block moving after it is released and the spring pushes it away?
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09/19/23

Balancing Chemical Reaction Equations │Please Help!

1.‎ Drag and drop the coefficients to balance this equation:___C6H6 + ___O2 ==> ___CO2 + ___H2O2.‎ Magnesium (Mg) reacts with oxygen (O2) producing magnesium oxide (MgO).a. Write the skeleton... more
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09/19/23

For what value of  is the function defined below continuous on ?
For what value of  is the function defined below continuous on ?
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09/19/23

A helium balloon has a volume of 0.003m^3. What is the force on the balloon if it’s surrounded by air? (
note: density of helium is 0.2 kg/m^3, and the density of air is 1.2 kg/m^3. i used 9.8 for gravity, and i got the Fnet to be 3.92x10^-3 N, but i’m not sure!
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09/19/23

Find the half-life

Find the half-life of an element which decays by 3.402% each day.
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09/19/23

Chapter 12 Question 2 Help Please

 a) Calculate the formula mass (molar mass) of the following compounds: Ca3(PO3)2, (NH4)2CO3,  C2H5OH.b) Find the percentage by mass of each element in: C2H5OH, (NH4)2SO4, Ca3(PO3)2.
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09/19/23

Chapter 12 Question
Potassium reacts with a certain element to form a compound with general formula K2X. What would the most likely formula be formed between aluminum and the element X? Explain.
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09/19/23

determine the number of solutions of each system of equations
{y=x^2-5x+9{y=3these are in one
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09/19/23

Work and a magnetic field
Magnetic part of the Lorentz force F on a change Q moving with a velocity vector V in a magnetic field B F=kQ V x B is perpendicular to the velocity V. A force that is perpendicular to the... more
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09/19/23

quadratic equation
An astronaut on the moon throws a baseball upward. The astronaut is 6​ ft, 6 in.​ tall, and the initial velocity of the ball is 50 ft. per sec. The height s of the ball is given by the equation... more
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09/19/23

Determine the formula unit for the compound formed when each pairs of ions interact.
Determine the formula unit for the compound formed when each pairs of ions interact. Li^+ and O2^−: ? Mg^2+ and S2^−: Al^3+ and Cl^−: Na^+ and N^3−:
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09/19/23

Determine the name or formula for each polyatomic ion.
Determine the name or formula for each polyatomic ion. formula: CO2/3 - name: ? ion name: nitrite ion       formula:? name: nitrate ion      formula:? formula: CN^-             name:  ?
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09/19/23

find the displacement vector and the angle of the displacement of a bird's travel
assume a bird is moving along at 3.00 mph in an easterly direction, the acceleration given by the wind is at a 31.0° angle to the original direction of motion, measured counterclockwise from the... more
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09/19/23

Equations for accelerated motion
A car starts from rest and reaches the speed of 10 m/s in 30s. assuming the car accelerates at a constant rate, what can you determine about the motion of the car from this info? what can't you... more
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