Vishnu

This page lists questions and answers that were posted by visitors named Vishnu.

Questions

The following questions were asked by visitors named Vishnu.

When copper is dissolved in nitric acid, a brown gas (NO2) is evolved, either by direct production of NO2 or by production of NO which is oxidized to NO2 by O2. Provide a Lewis drawing and resonance structures for the nitrate anion.

Identify the species which obey the octet rule for every atom. (The central atoms are underlined). a. ClO3- (Cl is underlined) b. SO2 (S is underlined) c. NO2+ (N is underlined) d. NO2 (N is underlined) e. ClO- (Cl is underlined)

An object is thrown vertically upward with a speed of 19.1 m/s. How high does it rise?

Larry leaves home at 2:08 and runs at a constant speed to the lamppost. He reaches the lamppost at 2:15, immediately turns, and runs to the tree. Larry arrives at the tree at 2:29. What is Larry's average velocity during his trip from home to the lamppost...

In 1865, Jules Verne suggested sending people to the Moon by launching a space capsule with a 207.9 m long cannon. The final speed of the capsule must reach 11.31 km/s. What acceleration would the passengers experience?

A rock is tossed straight up with a velocity of 37.1 m/s. When it returns, it falls into a hole 18.8 m deep. What is the rock's velocity as it hits the bottom of the hole?

A skier is gliding along at 1.13 m/s on horizontal, frictionless snow. He suddenly starts down a 13.1° incline. His speed at the bottom is 18.8 m/s. What is the length of the incline? ------------------------------------ Use his change in kinetic energy t...

A rock is tossed straight up with a velocity of 37.1 m/s. When it returns, it falls into a hole 18.8 m deep. What is the rock's velocity as it hits the bottom of the hole? Responses The gain in kinetic energy equals the loss of potential energy. (1/2) M (...

How long does it take the skier to reach the bottom?

Imagine you and a friend have robbed the Union Market. You are caught speeding out of the parking lot and are promptly apprehended by Campus Security. A scuffle ensues and you are both charged with resisting arrest. They isolate the two of you so that you...

An athlete at the gym holds a 4.33 kg steel ball in his hand. His arm is 68.7 cm long and has a mass of 4.69 kg. What is the magnitude of the torque about his shoulder if he holds his arm straight out to his side, parallel to the floor?

A woman has a mass of 64.2 kg. What is her weight on earth?

A man weighs 75 kg. What is his weight on the moon, where g=2.21 m/s2

A bag of cement of weight 370 N hangs from three wires Two of the wires make angles è1 = 58.6° and è2 = 23.8° with the horizontal. If the system is in equilibrium, calculate the tension T1.

Find equations of the tangent line and normal line to the curve at the given point. y = x^4 + 2e^x, (0,2)

Find the first and second derivatives of the function. h(x) = sqrt x^2 + 1

Please find the Derivative of the function y =sec^2x + tan^2x

Find an equation of the tangent line to the curve at the given point y = x + cosx, (0,1)

Differentiate the funciton H(x) = (x + x^-1)^3

Differentitate the function y =4(pi)^2

Which of the following was a topic of study in early sociology? a. Astrology b. Economics c. Physics d. History

Child standing in front of a wall claps his hands and hears the Eco after 0.5 sec . Determine his distance from wall velocity of sound 340 meter per sec

A box of 24 ornaments contain 3/4 red ornaments. How many red ornaments are in the box? How many ornaments are another color than red?

Shanti bought lemons at 7 foe Rs.6 and sold them at 6 for Rs.7. (1).find her profit percentage (2).how many lemons would she have to sell to earn a profit of Rs.65?

Answers

The following answers were posted by visitors named Vishnu.

The answer is 1744.89 m/s That's a little fast. Should I Square root this answer?

308/21 = 14.66 m/s I still get a wrong answer

Can i have the formula for this step please?

So the answer is 41.8 m?

h =18.0 m angle = 13.1° hypotenuse = ? Sine function formula is: Opposite / hypotneuse What is opposite?

Should the lenght be in centimetres or metres and the mass of the ball in kilograms?

will the weight be in kg or grams?

What is the magnitude of the torque about his shoulder if he holds his arm straight, but 46.6° below horizontal?

Never mind, I got the answer :)

I ran past the finish line in the race!

You learn ratios, ordering fractions, long division and other things.

H=u^2/2g =20×20/2×10 =20m/s

Please can you tell me ans of this question