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  • What type of rock is this?

    Your Answer: 
    i found about a 4 foot wide circle of similar looking rocks and im curious what type of rock it is. it is a really dark purple if broken. sometimes black
    Earth Sciences & Geology · 16 mins ago
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  • Estimate the cost of the energy lost to heat per hour per meter?

    Your Answer: 
    A small city requires about 15 MW of power. Suppose that instead of using high-voltage lines to supply the power, the power is delivered at 120 V. Assuming a two-wire line of 0.40-cm-diameter copper wire, estimate the cost of the energy lost to heat per hour per meter. Assume the cost of electricity is about 12 cents per kWh. The resistivity of... show more
    Engineering · 19 mins ago
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  • How far will the ball travel in the x direction if it launches horizontally from the table which is 1m high?

    Your Answer: 
    A) For a steel ball rolling down a 35 degree slope from a height of .5 m above the table, how far will the ball travel in the x direction if it launches horizontally from the table which is 1m high For the same ball rolling down a 45 degree slope from one meter high, what maximum diameter of loop the loop will the ball go around without falling?... show more
    Physics · 21 mins ago
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  • PHYSICS HOMEWORK HELP?

    Your Answer: 
    To view an interactive solution to a problem that is similar to this one, select Interactive Solution 7.24. A 0.0124-kg bullet is fired straight up at a falling wooden block that has a mass of 3.17 kg. The bullet has a speed of 567 m/s when it strikes the block. The block originally was dropped from rest from the top of a building and had been... show more
    Physics · 31 mins ago
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  • PHYSIC QUESTION!!?

    Your Answer: 
    A 1.60-kg ball, moving to the right at a velocity of +3.60 m/s on a frictionless table, collides head-on with a stationary 6.80-kg ball. Find the final velocities of (a) the 1.60-kg ball and of (b) the 6.80-kg ball if the collision is elastic. (c) Find the magnitude and direction of the final velocity of the two balls if the collision is completely... show more
    Physics · 31 mins ago
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  • Mastering Physics vector problem?

    Your Answer: 
    Vectors A⃗ and B⃗ are in the xy plane and their scalar product is 19.1 units. If A⃗ makes a 30.1 ∘ angle with the x axis and has magnitude A = 10.7 units, and B⃗ has magnitude B = 27.1 units, what can you say about the direction of B⃗ ?
    Physics · 32 mins ago
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  • My doctor has prescribed me codamol and i am afraid to use it.?

    Your Answer: 
    My doctor had prescribed me codamol, codeine, paracetamol combination, i am afraid to use it from the side effects i have read of. When it comes to nausea, dizzyness and sedating/ confusing effects i get very paranoid and i have to take this or just normal codeine which is even stronger, according to the doctor. Any opinions?
    Medicine · 32 mins ago
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  • Why could i bearly stay awake after i tried to overdose?

    Your Answer: 
    I’ve been wondering this for a short while now. I tried to OD a little while ago. Nobody knew, i took loads of pills before I went to bed and then woke up. I went to school, but could hardly keep my eyes open the whole day. I kept falling asleep when I got home. Still nobody knows what I did that day. Why did that happen?
    Medicine · 32 mins ago
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  • Biology Question! HELP?

    Your Answer: 
    During the course of the investigation to determine the classification of walking stick insects, a biologist observed two strikingly different coloration patterns in a population of walking sticks. Individual walking sticks are either striped or unstriped. Each pattern matches the pattern of coloration of the shrub in the walking stick habitat. This... show more
    Biology · 39 mins ago
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  • How to work out angle OCA?

    Your Answer: 
    Mathematics · 42 mins ago
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  • What's up Math?

    Your Answer: 
    Pls prove that:
    Mathematics · 44 mins ago
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  • In the equation 7-x^2=5, how can both -sqrt(5) and sqrt(5) both be answers when solving for X?

    Your Answer: 
    I understand that sqrt(5) can be an anwser but I do not get how you can get -sqrt(5). Can you show the steps to how you get -sqrt(5)? Help would be much appreciated!
    Mathematics · 1 hour ago
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  • Can anyone explain this or has anyone had/got the same thing?

    Your Answer: 
    So when I was younger I did my first tab of acid, after sobering up the following day I started noticing a small black figure in my peripheral but when i turn to look at it, it suddenly pulls it s self back round whatever corner it is looking at me from, I ve never been able to actually get a look at whoever/whatever it is, has anyone else ever... show more
    Paranormal Phenomena · 1 hour ago
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  • I need help with this chemistry question?

    Your Answer: 
    The oxidation of NH4+ to NO3- in acid solution (pH = 5.60) is described by the following equation: NH4+(aq) + 2 O2(g) + H2O(l) --> NO3-(aq) + 2 H+(aq) The overall reaction for the oxidation has an Eºcell = -0.271 V. Eº = 1.50 V for the half-reaction NO3- + 10 H+ + 8 e- --> NH4+ + 3H2O What is the ratio of [NO3-] to [NH4+] at 298 K if PO2... show more
    Chemistry · 1 hour ago
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