• ### Find the rms speed of CO2 molecules in a room at room temperature (295 K)?

1 answer · Physics · 4 years ago
• ### The figure below shows an ideal spring hanging from a ceiling. When a 1.35-kg mass is attached to the spring (as shown in the middle frame)?

The figure below shows an ideal spring hanging from a ceiling. When a 1.35-kg mass is attached to the spring (as shown in the middle frame), the spring stretches by 0.0275 m. The mass is then pushed up 0.0805 m from its equilibrium position and released, as shown on the far right. What is the kinetic energy of the mass at the instant it passes back... show more
The figure below shows an ideal spring hanging from a ceiling. When a 1.35-kg mass is attached to the spring (as shown in the middle frame), the spring stretches by 0.0275 m. The mass is then pushed up 0.0805 m from its equilibrium position and released, as shown on the far right. What is the kinetic energy of the mass at the instant it passes back through the equilibrium position?
1 answer · Physics · 4 years ago
• ### You attach a meter stick to an oak tree, such that the top of the meter stick is 2.67 meters above the ground?

You attach a meter stick to an oak tree, such that the top of the meter stick is 2.67 meters above the ground. Later, an acorn falls from somewhere higher up in the tree. If the acorn takes 0.126 seconds to pass the length of the meter stick, how high above the ground was the acorn before it fell (assuming that the acorn didn\'t run into any... show more
You attach a meter stick to an oak tree, such that the top of the meter stick is 2.67 meters above the ground. Later, an acorn falls from somewhere higher up in the tree. If the acorn takes 0.126 seconds to pass the length of the meter stick, how high above the ground was the acorn before it fell (assuming that the acorn didn\'t run into any branches or leaves on the way down)?
3 answers · Physics · 4 years ago
• ### A small coin, initially at rest, begins falling. If the clock starts when the coin?

A small coin, initially at rest, begins falling. If the clock starts when the coin begins to fall, what is the magnitude of the coin\'s displacement between t1 = 0.412 s and t2 = 0.618 s?
A small coin, initially at rest, begins falling. If the clock starts when the coin begins to fall, what is the magnitude of the coin\'s displacement between t1 = 0.412 s and t2 = 0.618 s?
2 answers · Physics · 4 years ago
• ### At the Spectrum in Irvine, there is a water fountain that has a series of jets that shoot water into the air at an angle of 75 degrees.?

At the Spectrum in Irvine, there is a water fountain that has a series of jets that shoot water into the air at an angle of 75 degrees. Calculate the volume of flow of the water in liters per second, if the maximum height of the trajectory is 2.5 meters and the range is 1.5 meters. The diameter of each jet is 2.00 cm.
At the Spectrum in Irvine, there is a water fountain that has a series of jets that shoot water into the air at an angle of 75 degrees. Calculate the volume of flow of the water in liters per second, if the maximum height of the trajectory is 2.5 meters and the range is 1.5 meters. The diameter of each jet is 2.00 cm.
1 answer · Physics · 4 years ago
• ### A uniform beam weighing 600 N is suspended from a building as described in the drawing below. If the weight W = 800 N, calculate?

A uniform beam weighing 600 N is suspended from a building as described in the drawing below. If the weight W = 800 N, calculate the tension in the tie tope and the components of the force applied to the hinge at point P on the wall.
A uniform beam weighing 600 N is suspended from a building as described in the drawing below. If the weight W = 800 N, calculate the tension in the tie tope and the components of the force applied to the hinge at point P on the wall.
1 answer · Physics · 4 years ago
• ### A rod of length L has a non uniform density. Let λ, the mass per unit length of the rod vary as λ = λ0 (s/L),?

A rod of length L has a non uniform density. Let λ, the mass per unit length of the rod vary as λ = λ0 (s/L), where λ0 is a constant and s is the distance from the end marked 0. Show that the CM is 2/3 Li.
A rod of length L has a non uniform density. Let λ, the mass per unit length of the rod vary as λ = λ0 (s/L), where λ0 is a constant and s is the distance from the end marked 0. Show that the CM is 2/3 Li.
2 answers · Physics · 4 years ago
• ### Let the position of a particle subject to simple harmonic motion be x(t) = 0.20sin(3.0t) meters. Find the velocity and acceleration of the p?

Let the position of a particle subject to simple harmonic motion be x(t) = 0.20sin(3.0t) meters. Find the velocity and acceleration of the particle when he object is 12.5 cm from its equilibrium position.
Let the position of a particle subject to simple harmonic motion be x(t) = 0.20sin(3.0t) meters. Find the velocity and acceleration of the particle when he object is 12.5 cm from its equilibrium position.
1 answer · Physics · 4 years ago
• ### A golfer hits his/her ball with speed v0 at an angle theta above the horizontal ground. Assuming that the angle theta is fixed and that air?

A golfer hits his/her ball with speed v0 at an angle theta above the horizontal ground. Assuming that the angle theta is fixed and that air resistance can be neglected, what is the minimum speed v0(min) for which the ball will clear a wall of height h, a distance d away? Then calculate the value of v0(min) for theta = 25 degrees, d = 50m, and h = 2m
A golfer hits his/her ball with speed v0 at an angle theta above the horizontal ground. Assuming that the angle theta is fixed and that air resistance can be neglected, what is the minimum speed v0(min) for which the ball will clear a wall of height h, a distance d away? Then calculate the value of v0(min) for theta = 25 degrees, d = 50m, and h = 2m
1 answer · Physics · 4 years ago
• ### Starting from rest, a sphere of mass M rolls down a ramp inclined at 37 degrees.?

Starting from rest, a sphere of mass M rolls down a ramp inclined at 37 degrees. What is the smallest value for the coefficient of static friction if the sphere does not slip in moving down the incline?
Starting from rest, a sphere of mass M rolls down a ramp inclined at 37 degrees. What is the smallest value for the coefficient of static friction if the sphere does not slip in moving down the incline?
1 answer · Physics · 4 years ago
• ### A circular disk or radius R has a mass M. A hole of diameter R is cut out of the disk at a point tangent to its circumference.?

A circular disk or radius R has a mass M. A hole of diameter R is cut out of the disk at a point tangent to its circumference. What is the moment of inertia for the rotations about an axis perpendicular to the disk and passing through its center?
A circular disk or radius R has a mass M. A hole of diameter R is cut out of the disk at a point tangent to its circumference. What is the moment of inertia for the rotations about an axis perpendicular to the disk and passing through its center?
2 answers · Physics · 4 years ago
• ### Suppose a pendulum bob weighs 80 N and was attached to a string having a length of 4.0 m and a breaking strength of 120 N?

Suppose a pendulum bob weighs 80 N and was attached to a string having a length of 4.0 m and a breaking strength of 120 N. What is the maximum starting angle from the vertical from which the ball can be released without breaking the string?
Suppose a pendulum bob weighs 80 N and was attached to a string having a length of 4.0 m and a breaking strength of 120 N. What is the maximum starting angle from the vertical from which the ball can be released without breaking the string?
1 answer · Physics · 4 years ago
• ### I got Taylor swift tickets for PETCO park in San Diego?

I am section FB 113 row 30 seat 11. Do you think these are bad seats? I am depressed that I wasn't able to get pit tickets :(. Do you think I will have a good view from my seat?
I am section FB 113 row 30 seat 11. Do you think these are bad seats? I am depressed that I wasn't able to get pit tickets :(. Do you think I will have a good view from my seat?
2 answers · Other - Entertainment · 4 years ago
• ### Donna buys some apples at 35 cents each. She eats 2 apples and sells the rest for 45 cents each. She makes \$4.40. How many apples did she?

1 answer · Mathematics · 4 years ago
• ### "Always resignation and acceptance. Always prudence and honour and duty. Elinor, where is your heart?"?

1 answer · Words & Wordplay · 4 years ago
• ### Enough of a monoprotic acid is dissolved in water to produce a 0.0138 M solution.?

The pH of the resulting solution is 6.14. Calculate the Ka for the acid.
The pH of the resulting solution is 6.14. Calculate the Ka for the acid.
1 answer · Chemistry · 5 years ago
• ### The Ka of a monoprotic weak acid is 8.13 × 10-3 M. What is the percent ionization of a 0.102 M solution of thi?

1 answer · Chemistry · 5 years ago
• ### At equilibrium, the concentrations in this system were found to be [N2]=[O2]=0.200 M and [NO]=0.500 M.?

N2 (g) + O2 (g) = 2NO (g) If more NO is added, bringing its concentration to 0.800 M, what will the final concentration of NO be after equilibrium is re-established?
N2 (g) + O2 (g) = 2NO (g) If more NO is added, bringing its concentration to 0.800 M, what will the final concentration of NO be after equilibrium is re-established?
4 answers · Chemistry · 5 years ago
• ### At a certain temperature, the Kp for the decompositon of H2S is 0.821 atm.?

H2S (g) = H2 (g) + S (g) Initally, only H2S is present at a pressure of 0.279 atm in a closed container. What is the total pressure in the container at equilibrium?
H2S (g) = H2 (g) + S (g) Initally, only H2S is present at a pressure of 0.279 atm in a closed container. What is the total pressure in the container at equilibrium?
1 answer · Chemistry · 5 years ago
• ### At a certain temperature, 0.620 mol of SO3 is placed in a 1.50-L container.?

At equilibrium, 0.170 mol of O2 is present. Calculate Kc.
At equilibrium, 0.170 mol of O2 is present. Calculate Kc.
1 answer · Chemistry · 5 years ago