JACQUES D.

09/21/22

chemistry molarity

Below are sample experimental data for this week's lab. Mass of the Test Tube 4.458 Mass of Test Tube and Unknown Hydrate: 9.641 Mass of Test Tube and Anhydrous Salt: 7.310 Determine the %... more

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Physics

09/21/22

please help me with this physics question

A stunt woman of mass 50.0 kg can run at a top speed of 19.2 mph. A film requires that she run and jump off a cliff that sits 13.3 m above the surface of a lake. However, she must clear a shelf of... more

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Chemistry

09/20/22

The rate constant at 669 K is 9.15 x 10^-4s^-1. The rate constant will be 0.00501s^-1 at ________K.

The activation energy for the gas phase isomerization of methyl cis-cinnamate is 174 kJ.cis-C6H5CH = CHCOOCH3 --> trans-C6H5CH = CHCOOCH3The rate constant at 669 K is 9.15 x 10-4s-1. The rate... more

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Statistics

09/20/22

Suppose that E and F are two events and that N(E and F)=250 and N(E)=430. What is P(F|E)?

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Chemistry

09/20/22

You have an empty 2.00 L soda bottle at room temperature (25.0°C) and you put the soda in the freezer. What is the temperature of your freezer if the new volume of the bottle is 1.81L ?

Please show work!

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Physics

09/20/22

Physics Question

The velocity of the transverse waves produced by an earthquake is 4.35 km/s, while that of the longitudinal waves is 4.13 km/s. A seismograph records the arrival of the transverse waves 64.72 s... more

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Math Calculus

09/20/22

Given the function 𝑦=-2x^2+3x-5, find the following:

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Chemistry

09/20/22

Calculate the rate constant, 𝑘, for a reaction at 72.0 °C that has an activation energy of 87.8 kJ/mol and a frequency factor of 6.56×1011 s−1.

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Science Physics Act Science

09/20/22

Refraction in a prism

I'm having problems with this optics problem:Glass prism ABC with refractive index n1 = 1.6, vertex A angle α = 40° and vertex B angle β = 60°,placed in a container with two different liquids... more

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Geometry

09/19/22

What is the point that divides the directed line segment from point A to point B in a 2:1 ratio? Point A = (6,-1) Point B = (-3,5)

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Math Calculus

09/19/22

Let f be defined by the following.

F(x)= 3x-4 if x<38-x if x (less than or equal to) 3find the left and right hand f’(3+)f’(3-)

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Statistics Probability

09/19/22

Probability (Intro, Mult/Add Rules, & Counting) Exercises

Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 102 people in the 18-21 age bracket and finds that 87 of them respond and 15... more

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Math Calculus

09/18/22

The volume of a spherical hot air balloon V(r) =(4/3)pir^3 changes as its radius changes

The volume of a spherical hot air balloon V(r) =(4/3)pir^3 changes as its radius changes. The radius is a function of time given by r(t) = 3t. Find the average rate of change of the volume with... more

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Chemistry

09/18/22

Relative Mass Homework Question

When working with gaseous substances at high temperatures and low pressures, we can use the ideal gas law N = PV/(kT) to prepare samples with specific number of particles. We just need to select... more

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Physics

09/17/22

Can you help me with this question??

In a road with speed limit of 30 miles per hour, how much time (in minutes) will you gain by driving at an average speed of 5 miles per hour over the speed limit if it would take 30 minutes to... more

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Physics

09/17/22

Car in northbound lane with acceleration going towards car in southbound lane 300m away going 25 m/s. When will they pass each other?

A car in the northbound lane is sitting at a red light. At the moment the light turns green, the car accelerates from rest at 2.0 m/s2m/s2. At this moment there is also a car in the southbound lane... more

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Physics

09/17/22

kinematic word problem with two objects

Ryan and Eddie ran in the same direction at t=0. Ryan ran with an average velocity of 10 m/s while Eddie slowly increased his speed to 8 m/s in 20 seconds, then maintained its final velocity for... more

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Geometry

09/16/22

I need help with my answer

Find x + 21Find 5x-27Find x

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Physics

09/15/22

particles q1=+8.0 uc , q2=+3.5 uc and q3 =-2.5 uc are in a line

forces and multiple charges

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Calculus

09/15/22

Help! How would I answer this rates of change problem?

Let f(x)= 6-x2. Find the following:a) f(7)-f(3) ————- 7-3b) f(3+h)-f(3) ————— h

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Statistics

09/15/22

Hello, I need help solving the question below. Please help

Given a sample X1, … , X9 ~ 𝑁 (𝜇, 32), if 𝜇 = 1 , 𝑃 ( − 2 < 𝑋̅ < 4 ) = ?

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Chemistry

09/15/22

The average rate of formation of H2 over the same time period is _____ M s-1.

For the gas phase decomposition of hydrogen iodide at 700 K2 HIH2 + I2the average rate of disappearance of HI over the time period from t = 0 s to t = 2918 s is found to be 1.32×10-4 M s-1.The... more

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Chemistry

09/15/22

Galvanic Cell Electrochemistry

A galvanic cell was operated under almost ideally reversible conditions at a current of 10-16 amps. How long would it take to deliver 1 mole electron? How many electrons would be delivered by the... more

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Algebra 2 Precalculus

09/15/22

What is the length of the shortest path from A to D?

Segment BC perpendicular to Segment CDSegment BC perpendicular to Segment ABAB=3BC=6CD=5A.) 14B.) 12C.) 10√2D.) 10

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Statistics

09/15/22

Question about Standard Deviation

x P(x) 0 0.05 1 0.3 2 0.3 3 0.35 Find the standard deviation of this probability distribution. Give your answer to at least 2 decimal places

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chemistry molarity

please help me with this physics question

The rate constant at 669 K is 9.15 x 10^-4s^-1. The rate constant will be 0.00501s^-1 at ________K.

Suppose that E and F are two events and that N(E and F)=250 and N(E)=430. What is P(F|E)?

You have an empty 2.00 L soda bottle at room temperature (25.0°C) and you put the soda in the freezer. What is the temperature of your freezer if the new volume of the bottle is 1.81L ?

Physics Question

Given the function 𝑦=-2x^2+3x-5, find the following:

Calculate the rate constant, 𝑘, for a reaction at 72.0 °C that has an activation energy of 87.8 kJ/mol and a frequency factor of 6.56×1011 s−1.

Refraction in a prism

What is the point that divides the directed line segment from point A to point B in a 2:1 ratio? Point A = (6,-1) Point B = (-3,5)

Let f be defined by the following.

Probability (Intro, Mult/Add Rules, & Counting) Exercises

The volume of a spherical hot air balloon V(r) =(4/3)pir^3 changes as its radius changes

Relative Mass Homework Question

Can you help me with this question??

Car in northbound lane with acceleration going towards car in southbound lane 300m away going 25 m/s. When will they pass each other?

kinematic word problem with two objects

I need help with my answer

particles q1=+8.0 uc , q2=+3.5 uc and q3 =-2.5 uc are in a line

Help! How would I answer this rates of change problem?

Hello, I need help solving the question below. Please help

The average rate of formation of H2 over the same time period is _____ M s-1.

Galvanic Cell Electrochemistry

What is the length of the shortest path from A to D?

Question about Standard Deviation

Still looking for help? Get the right answer, fast.

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JACQUES D.

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chemistry molarity

please help me with this physics question

The rate constant at 669 K is 9.15 x 10^-4s^-1. The rate constant will be 0.00501s^-1 at ________K.

Suppose that E and F are two events and that N(E and F)=250 and N(E)=430. What is P(F|E)​?

You have an empty 2.00 L soda bottle at room temperature (25.0°C) and you put the soda in the freezer. What is the temperature of your freezer if the new volume of the bottle is 1.81L ?

Physics Question

Given the function 𝑦=-2x^2+3x-5, find the following:

Calculate the rate constant, 𝑘, for a reaction at 72.0 °C that has an activation energy of 87.8 kJ/mol and a frequency factor of 6.56×1011 s−1.

Refraction in a prism

What is the point that divides the directed line segment from point A to point B in a 2:1 ratio? Point A = (6,-1) Point B = (-3,5)

Let f be defined by the following.

Probability (Intro, Mult/Add Rules, & Counting) Exercises

The volume of a spherical hot air balloon V(r) =(4/3)pir^3 changes as its radius changes

Relative Mass Homework Question

Can you help me with this question??

Car in northbound lane with acceleration going towards car in southbound lane 300m away going 25 m/s. When will they pass each other?

kinematic word problem with two objects

I need help with my answer

particles q1=+8.0 uc , q2=+3.5 uc and q3 =-2.5 uc are in a line

Help! How would I answer this rates of change problem?

Hello, I need help solving the question below. Please help

The average rate of formation of H2 over the same time period is _____ M s-1.

Galvanic Cell Electrochemistry

What is the length of the shortest path from A to D?

Question about Standard Deviation

Still looking for help? Get the right answer, fast.

OR

JACQUES D.

Suppose that E and F are two events and that N(E and F)=250 and N(E)=430. What is P(F|E)?