JACQUES D.

04/29/22

Calculate the (a) Total Range, (b)Total time of flight and (c) Maximum height reached by the projectile

A projectile was launched with an initial velocity of 4 ms from a height of 8 meters at an angle of 40-degrees from the horizontal. Calculate the (a) Total Range, (b)Total time of flight and (c)... more

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Physics Momentum Impulse

04/29/22

Physics impulse and momentum question

A Figure skater of mass 70kg is gliding at a velocity of 3.5 m/s [E]. Their skating partner, of mass 45 kg, skates at a velocity of 4.2 m/s [N] when they jump into the first skater’s arms.... more

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Probability

04/29/22

probability of at least one secretary absent, at least one secretary comes to work and only one comes to work

A businessman has two secretaries. The probability that the one hired most recently will be absent on any given day is 0.08 and the probability that the other secretary will be absent on any given... more

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Science Physics

04/29/22

PHYSICS DOUBT -

We know why the sky is blue, that's because the atmosphere contains particles that scatter the blue light, making the sky blue. But at night, why is the sky not blue or any other colour in the... more

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Calculus

04/29/22

Need help with this calc 3 question

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Math Calculus Trigonometry

04/28/22

if cos a = 40/41, and tan b = 5/12 and neither a nor b are in quadrant 1, find sin 2b, and sec (a-b)

I've been stumped for over a week

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Ap Physics

04/28/22

Third Harmonic Frequency?

What is the third harmonic frequency of a 1.73 m string fixed at both ends that has a wave speed of 212 m/s?

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Precalculus

04/27/22

more precalc please help

Solve sin(3x)cos(8x)−cos(3x)sin(8x)=−0.85 for the smallest positive solution.

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Physics

04/27/22

Block Held by Spring

The coefficient of static friction can be determined using the following procedure. A block is held against a vertical wall by compressing a spring attached to the block.If the spring has a spring... more

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Physics

04/27/22

Physics Question

An elevator cab is pulled upward by a cable. The cab and its single occupant have a combined mass of 1450 kg. When that occupant drops a coin, the tension in the cable is 12.0 kN. What is the... more

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Physics

04/27/22

Physics Problem

I need help. I dont understand this. Can anyone help me on this plz. AS soon as possible. Thank YOU, this would be really appreciated alot for real. bye. ByeA 50 kg roller coaster pauses at the top... more

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Calculus

04/26/22

Identify all inflection points of f(x)=(1/x)+ln(x)

Looking at the graph the only inflection point I can see is (1,1), however, I'm not sure about that answer.

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Physics Electrostatistics

04/25/22

Electrostatistics (Physics)

Two point charges of -2.0 C are fixed at opposite ends of a meter stick. Where on the meter stick (if anywhere) could (a) a free electron and (b) a free proton are placed so that they are in... more

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Calculus

04/25/22

Can anyone help me solving these questions? with steps please.

Take the function f(x) = x2 e-x,a) Determine the intervals of increase and decrease for f(x). b) Determine the intervals of concavity for f(x).c) Determine the coordinates of any points of inflection. more

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Conditional Probability Bayes Rule

04/25/22

Bayes Rule Approach

The city of San Fransokyo is a high-tech city, especially in the field of robotics. There are three big companies that rule the city: Granville, Axcel, and Hamada. The Granville company controls... more

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Precalculus

04/25/22

The cube roots of 1 + i. Referring to the labels from the graph you selected above, give the exact roots. w0= w1= w2=

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Chemistry

04/24/22

When should I use 0.0257 or 0.0592?

There are two equations:E= E° = (0.0257/n)(ln(Q)) and E= E° = (0.0592/n)(log(Q)).When should I use 0.0257? When should I use 0.0592?

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Calculus

04/24/22

If 𝑓(𝑥) = cos2 𝜃 − 2 sin 𝜃 , 0 ≤ 𝜃 ≤ 2𝜋, find where 𝑓 is increasing, decreasing, intervals of concavity and inflection point(s).

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Chemistry

04/22/22

Chemistry help asap😭

What is the freezing point of a 0.20 m sucrose (nonelectrolyte)? Kf = 1.86 o C /m.Calculate the osmotic pressure of 0.2 M salt solution (NaCl) at 25 o C?

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Math Calculus Mathematics

04/21/22

Sand pours out of bag at a rate of r(t) = 100 − 3t mL/min until the bag runs out of sand at t = 20 min. How much sand was originally in the bag?

Im not sure how I would solve this problem, any help would be appreciated!

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Chemistry

04/21/22

A 678 mL gas sample at STP is compressed to a volume of 263 mL, and the temperature is increased to 38◦C. What is the new pressure of the gas in Pa? Answer in units of Pa.

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Calculus

04/21/22

Find all values of c, if any so that the tangent line to the graph of f at x=c passed through (0,0)

Let 𝑓𝑥=(𝑒^x)−𝑥, and let 𝑐 be a real number. Find 𝑓′(𝑥) and all values of 𝑐, if any, so that the tangent line to the graph of 𝑓 at 𝑥=𝑐 passes through the point (0,0). If no such 𝑐 value exists,... more

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Chemistry

04/20/22

Someone please answer this question for me

What is the mass (in grams) of 3.559×1093.559×109 atoms of Cadmium (Cd)?You may enter your answer in either standard or scientific notation, but you must have the correct number of significant... more

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Statistics

04/20/22

Suppose the probability of an IRS audit is 5.2 percent for U.S. taxpayers who file form 1040 and who earned $100,000 or more.

A) What are the odds that such a taxpayer will be audited? _____ to _____B) What are the odds against such a taxpayer being audited? _____ to _____

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Physics

04/20/22

a 2.0 x 103 kg truck is driving down a hill at 105 km/hr when a dog runs out on the road 94m in front of it

A 2.0 x 103 kg truck is driving down the road at 105 km/hr when a dog runs out on the road 94m infront of it. The driver’s reaction time is 0.35 seconds before hitting the brakes. The coefficient... more

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Calculate the (a) Total Range, (b)Total time of flight and (c) Maximum height reached by the projectile

Physics impulse and momentum question

probability of at least one secretary absent, at least one secretary comes to work and only one comes to work

PHYSICS DOUBT -

Need help with this calc 3 question

if cos a = 40/41, and tan b = 5/12 and neither a nor b are in quadrant 1, find sin 2b, and sec (a-b)

Third Harmonic Frequency?

more precalc please help

Block Held by Spring

Physics Question

Physics Problem

Identify all inflection points of f(x)=(1/x)+ln(x)

Electrostatistics (Physics)

Can anyone help me solving these questions? with steps please.

Bayes Rule Approach

The cube roots of 1 + i. Referring to the labels from the graph you selected above, give the exact roots. w0= w1= w2=

When should I use 0.0257 or 0.0592?

If 𝑓(𝑥) = cos2 𝜃 − 2 sin 𝜃 , 0 ≤ 𝜃 ≤ 2𝜋, find where 𝑓 is increasing, decreasing, intervals of concavity and inflection point(s).

Chemistry help asap😭

Sand pours out of bag at a rate of r(t) = 100 − 3t mL/min until the bag runs out of sand at t = 20 min. How much sand was originally in the bag?

A 678 mL gas sample at STP is compressed to a volume of 263 mL, and the temperature is increased to 38◦C. What is the new pressure of the gas in Pa? Answer in units of Pa.

Find all values of c, if any so that the tangent line to the graph of f at x=c passed through (0,0)

Someone please answer this question for me

Suppose the probability of an IRS audit is 5.2 percent for U.S. taxpayers who file form 1040 and who earned $100,000 or more.

a 2.0 x 103 kg truck is driving down a hill at 105 km/hr when a dog runs out on the road 94m in front of it

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