Newest AP physics Questions | Wyzant Ask An Expert

09/17/18

Relating electric field to electric potential

Two equal positive charges are separated by a distance R and are moved to a distance 4R away from each other. What happens to the electric field and electric potential at point P, midway between... more

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Ap Physics

09/17/18

A man is launched from a 74 meter tall building with a horizontal velocity of .5m/s. How far away does he land when he hits ground.

I need help with some physics homework.

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Ap Physics

08/24/18

Is this equation dimensionally correct?

Is the equation v2/a dimensionally correct?

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Ap Physics

06/03/18

How to find the weight of the air inside a ball?

I know the radius including the outside layer or "shell" of the basketball is 0.1205m and without is 0.1075m. The inflation pressure is 55158.06 N/m2 in Pascals.

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Ap Physics

04/26/18

What is the minimum energy that is required to take a stationary satellite...

What minimum energy is required to take a stationary 600 kg satellite from the surface of the moon to an altitude of 9.2x10^5 and put it into an orbit with an orbital speed of 1.36x10^3... more

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Ap Physics

04/13/18

How do you find the net gravitational force and direction if there are four objects?

Four spheres of equal 8 kg are located at the corners of a square of length 0.64 m per side. How am I supposed to find the net gravitational force AND direction of one of the objects? Do I use... more

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Ap Physics

03/23/18

Centripetal forces with tilts/banks

A 220000 kg plane flying at 130 m/s tilts 30º above the horizontal to fly in a circle. What is the radius of the circle in which the plane flies?

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Ap Physics

03/13/18

Physics question, its about how much the other side of a mobile is weighting, with the infromation given.

on a 10 meter long, 10k bar of a large calder mobile, hanging from a vertical wire @ the 4 meter position on the bar, is a purple metal star with a mass of 55 kg. Positioned at the 10 meter end.... more

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Ap Physics

02/09/18

How do I solve this AP Chemistry problem on catalysts?

A famous chemical demonstration is the "magic genie" procedure, in which hydrogen peroxide decomposes to water and oxygen gas with the aid of a catalyst. The activation energy of this... more

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Ap Physics

02/07/18

How do I solve this AP Chemistry problem on the decomposition of HI(g)?

The activation energy for the decomposition of HI (g) to H2 (g) and I2 (g) is 186 kJ/mol. The rate constant at 555K is 3.52×10^-7 L/mol•s. What is the rate constant at 645K?

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Ap Physics

02/07/18

How do I solve this Chemistry problem on activation energy and calculating the value of k?

The reaction (CH3)3CBr+ OH==>(CH3)3COH+Be In a certain solvent is first order with respect to (CH3)3CBr and zero order with respect to OH-. In several experiments, the rate constant k was... more

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Ap Physics

02/07/18

How do I solve this Chemistry problem on activation energy?

The rate constant for the gas phase decomposition of N2O5 has the following temperature dependence T (K) k (s^-1) 4.9×10^-3 338. 5.0×10-4 318 ... more

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Ap Physics

02/07/18

How do I solve this AP Chemistry problem?

How do I calculate the activation energy for the reverse of the reaction NO(g) +CO(g) ==>NO(g) CO₂(g), given the activation energy for the forward reaction for the forward reaction is 125kJ/mol... more

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Ap Physics

01/18/18

Physics Power and Work

A 49kg bicycle rider delivers an average of 0.28 hp. The mass of the bicycle is 2.1kg and the hill she is climbing is 245m tall. How much time will this take?

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Ap Physics

01/15/18

How do I solve this problem on the critical point of NH3?

The critical point of NH3 is 132°C and 111 atm and the critical point of N2 is -147°C and 34 atm. Which of these substances cannot be liquefied at room temperature no matter how much pressure is... more

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Ap Physics

01/15/18

How do I solve this problem on air conditioners and evaporation?

In regions with dry climates, evaporative coolers are used to cool the air. A typical electric air conditioner is rated at 1.00×10^4 Btu/he. What quantity of water must be evaporated each hour to... more

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Ap Physics

01/15/18

How do I solve this Chemistry problem on the phase changes of water?

A 20.0-g sample of ice at -10°C is mixed with 100.0 g of water at 80°C. Calculate the final temperature of assuming no heat loss to the surroundings. The heat of capacities of ice and water are... more

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Ap Physics

01/15/18

How do I solve this problem on the vapor pressure of benzene?

Dry nitrogen is bubbled through liquid benzene at 20.0°C. From 100.0L of the gaseous mixture of nitrogen and benzene, 24.7 g is condensed by passing the mixture through a trap at a temperature... more

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Ap Physics

01/15/18

Can you help me with this problem on the density of solid Argon?

Argon has a cubic closest packed structure as a solid. Assuming that argon has a radius of 190 pm, calculate the density of solid argon.

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Ap Physics

01/15/18

How do I solve this AP Chemistry on Boron Nitride?

Boron Nitride ( BN) exists in two forms. The first is a slippery solid former from the reaction from BCl3 and NH3, followed by heating in a ammonia atmosphere at 750°C. Subjecting the first form of... more

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Ap Physics

01/14/18

How do I solve this problem on methyl salicylate and methyl 4-hydroxybenzoate?

Methyl salicylae has a melting point of -8°C. methyl 4-hydroxybenzoate, another molecule with the exact same molecular formulabhas a melting point of 127°C. Why is there such a large... more

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Ap Physics

01/13/18

Can you help me with this problem on diethyl ether?

Diethyl ether was one of the first chemicals used as an anesthetic. At 34.6°C, diethyl ether has a vapor pressure of 760 torr, and at 17.9°C, it has a vapor pressure of 400 torr. What is the heat... more

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Ap Physics

01/13/18

What role does humidity play in how our bodies regulate temperature?

A common response hearing that the temperature in New Mexico is 105°F is, "It's not that bad; it's a dry heat", whereas at the same time, the summers in Atlanta, Georgia are the characterized as... more

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Ap Physics

01/13/18

How does evaporation of alcohol remove heat energy from a person's body?

When a person has a severe fever, one therapy used to reduce the fever is an "alcohol rub". Explain how the evaporation of alcohol from a person's skin removes heat energy from the body.

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Ap Physics

01/13/18

Can you help me with this problem on Xenon?

Consider the following data for Xenon: Triple point: -121°C, 280 torr Normal melting point: -112°C Normal boiling point: -107°C Which is more dense, liquid or solid Xe? How do the melting... more

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AP physics

Relating electric field to electric potential

A man is launched from a 74 meter tall building with a horizontal velocity of .5m/s. How far away does he land when he hits ground.

Is this equation dimensionally correct?

How to find the weight of the air inside a ball?

What is the minimum energy that is required to take a stationary satellite...

How do you find the net gravitational force and direction if there are four objects?

Centripetal forces with tilts/banks

Physics question, its about how much the other side of a mobile is weighting, with the infromation given.

How do I solve this AP Chemistry problem on catalysts?

How do I solve this AP Chemistry problem on the decomposition of HI(g)?

How do I solve this Chemistry problem on activation energy and calculating the value of k?

How do I solve this Chemistry problem on activation energy?

How do I solve this AP Chemistry problem?

Physics Power and Work

How do I solve this problem on the critical point of NH3?

How do I solve this problem on air conditioners and evaporation?

How do I solve this Chemistry problem on the phase changes of water?

How do I solve this problem on the vapor pressure of benzene?

Can you help me with this problem on the density of solid Argon?

How do I solve this AP Chemistry on Boron Nitride?

How do I solve this problem on methyl salicylate and methyl 4-hydroxybenzoate?

Can you help me with this problem on diethyl ether?

What role does humidity play in how our bodies regulate temperature?

How does evaporation of alcohol remove heat energy from a person's body?

Can you help me with this problem on Xenon?

Still have a question? Ask your own and get expert help!

RELATED QUESTIONS TO:

Relating electric field to electric potential

A man is launched from a 74 meter tall building with a horizontal velocity of .5m/s. How far away does he land when he hits ground.

Is this equation dimensionally correct?

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