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While exploring a cave, a spelunker starts at the entrance and moves the following distances. She goes 75.0 m north, 250 m east, 125 m at an angle 30.0° north of east, and 150 m south. Find the
An atom with mass m emits a photon of wavelength A. What is the kinetic energy K of the recoiling atom?
A string fixed at both ends is 8.40 m long and has a mass of 0.120 kg. It is subjected to a tension of 96.0 N and set oscillating. (a) What is the speed of the waves on the string?
Question: An object having mass 900 kg and traveling at speed 0.850c collides with a stationary object having mass 1 400 kg. The two objects stick together. Find
A friend passes by you in a spacecraft traveling at a high speed. He tells you that his craft is 20.0 m long and that the identically constructed craft you are sitting in is 19.0 m long. According t
They also brought 4 can cans of sauce. each can weighed 8 oz. how many ounces did each of them carry if each carry the same amount?
Two students with vibrating 440-Hz tuning forks walk away from each other with equal speeds. How fast must they walk so that they each hear a frequency of 438 Hz from the other fork?
When the time is 0.5t, is the height of the object greater than 0.5h, equal to 0.5h, or less than 0.5h? Give reasons for your answers.
When a 7.00g sample of KCN is diisolved in water in a calorimeter that has a total heat capacity of 5.989 KJ K^-1, the temperature decreases by 0.2010 K. Calculate the molar heat of solution of KCN.
Write down expression for his one week earnings in which he worked for 40 hours out of which x hours was over time also find the number of hours of his normal work if he recieves Rs 116 in all.
The second aircraft is at altitude 1000 m, horizontal distance 17.2 km, and 22.0° south of west. What is the distance between the two aircraft? (Place the x axis west, the y axis south, and the
Heat was applied and the temperature was back to 85 degrees Fahrenheit. Find the final weight, volume and pressure of the gas.
Your store has averaged 1775 transactions per week for the last four weeks. What is the percent change in your sales goal from this week last year to this week this year?
You take an aspirin tablet (a compound consisting solely of carbon, hydrogen, and oxygen) with a mass of 1.00 g, burn it in air, and collect 2.20 g of carbon dioxide and 0.400 g water. The molar mas
While Steve was a student at the University, he borrowed $12000 in student loans at an annual rate of 9 percent. If he repays $1500 per year, how long, to the nearest year, will it take him to re
A substance contains 35.0 g nitrogen, 5.05 g hydrogen, and 60.0 g of oxygen. How many grams of hydrogen are there in a 185-g sample of the substance?
Sean caught a prize fish last weekend. He was going to measure it but realized that his ruler was not long enough. If the body was the length of the head plus the tail, what is the total length of
The degree of agreement among several measurements of the same quantity is called__________. It reflects the reproducibility of a given type of measurement.
A 3.00-g sample of an alloy (containing only Pb and Sn) was dissolved in nitric acid(HNO3). Sulfuric acid was added to this solution, which precipitated 2.93 g of PbSO4. Assuming that all of the lea
The vertical end of a trough, which is in the form of a trapezoid, has the following dimensions: width at the top is 1.65m, width at the bottom is 1.15m, and depth is 1.35m. Find the area of this sec
If the diagonal length of a square is tripled, how much is the increase in the perimeter of that square?
A car weighing 10 N on a hill which makes an angle of 20 degree with the horizontal. Find the components of car's weight parallel and perpendicular to the road?
An isosceles trapezoid has an area of 40 square meters and an altitude of 2 meters. Its two bases have ratio of 2 is to 3. What are the lengths of the bases and one diagonal of the trapezoid?
The diagonal of a rectangle is 25 meters long and makes an angle of 36 degree with one side of the rectangle. Find the area and the perimeter of the rectangle.
Knowing that the carved head of Lincoln at Mt. Rushmore is 60 ft. tall, how tall would his entire body be if it were carved into the mountain?