• Ionic eqn for +C7H7ClC2H8AgNO5.?

    4 answers · Chemistry · 1 month ago
  • Combination Question?

    1. There are 10 straight lines in the plane, no two of them are parallel to each other, and no 3 intersect at one point. How many intersection points are there? 2. There are 9 different books for students A, B, and C: (a) One person gets two books, one person gets three books, one person gets four books, and how many kinds are given to the law?
    1. There are 10 straight lines in the plane, no two of them are parallel to each other, and no 3 intersect at one point. How many intersection points are there? 2. There are 9 different books for students A, B, and C: (a) One person gets two books, one person gets three books, one person gets four books, and how many kinds are given to the law?
    1 answer · Mathematics · 1 month ago
  • What‘'s up? 1 question in combination of math?

    From the mathematics department of 9 people and the education department, 6 people were selected to form a mathematics education study group. (a) 2 members of the Department of Education; (b) At least 2 students in the Department of Education; How many groups are there?
    From the mathematics department of 9 people and the education department, 6 people were selected to form a mathematics education study group. (a) 2 members of the Department of Education; (b) At least 2 students in the Department of Education; How many groups are there?
    2 answers · Mathematics · 1 month ago
  • Anyone here can solve Combination questions?

    1) What is the total number of seven digits consisting of 0, 1, 1, 3, 3, 3, 4 numbers? 2) What is the total combination if 1ball,2balls,3balls,...,12balls are drawn each time from a bag which contains 5 red balls and 7 white balls. Model Answers: 1. 360 2. 596
    1) What is the total number of seven digits consisting of 0, 1, 1, 3, 3, 3, 4 numbers? 2) What is the total combination if 1ball,2balls,3balls,...,12balls are drawn each time from a bag which contains 5 red balls and 7 white balls. Model Answers: 1. 360 2. 596
    1 answer · Mathematics · 1 month ago
  • Force Physics?

    A flat plate is cut in the shape of a square of side 20cm, with an equilateral triangle of side 20 cm adjacent to the square. Calculate the distance of center of mass from the apex of the triangle. If you have a labelled diagram, that would be nice. Given that the answer: 22.6cm
    A flat plate is cut in the shape of a square of side 20cm, with an equilateral triangle of side 20 cm adjacent to the square. Calculate the distance of center of mass from the apex of the triangle. If you have a labelled diagram, that would be nice. Given that the answer: 22.6cm
    1 answer · Physics · 2 months ago
  • Force in equilibrium of physics?

    A simple model of the ammonia molecule (NH₃) consists of a pyramid with the hydrogen atoms at the vertices of the equilateral base and the nitrogen atom at the apex. The N-H distance is 0.10nm and the angle between 2 N-H bonds is 108°. Find the center of gravity of the molecule.(Atomic weights: H=1, N=14; 1nm=1*10^-9m.)
    A simple model of the ammonia molecule (NH₃) consists of a pyramid with the hydrogen atoms at the vertices of the equilateral base and the nitrogen atom at the apex. The N-H distance is 0.10nm and the angle between 2 N-H bonds is 108°. Find the center of gravity of the molecule.(Atomic weights: H=1, N=14; 1nm=1*10^-9m.)
    1 answer · Physics · 2 months ago
  • Hey experts of Physics?

    A flat plate is cut in the shape of a square of side 20cm, with an equilateral triangle of side 20 cm adjacent to the square. Calculate the distance of center of mass from the apex of the triangle. Given that the answer: 22.6cm
    A flat plate is cut in the shape of a square of side 20cm, with an equilateral triangle of side 20 cm adjacent to the square. Calculate the distance of center of mass from the apex of the triangle. Given that the answer: 22.6cm
    3 answers · Physics · 2 months ago
  • P R E S S U R E__P H Y S I C S?

    Distinguish between static pressure, dynamic pressure and total pressure when applied to streamline(laminar) fluid flow and given the expressions for these 3 pressures at a point in the fluid in terms of the fluid velocity v, the fluid density ρ, pressure P, and the height h, of the point with respect to datum.
    Distinguish between static pressure, dynamic pressure and total pressure when applied to streamline(laminar) fluid flow and given the expressions for these 3 pressures at a point in the fluid in terms of the fluid velocity v, the fluid density ρ, pressure P, and the height h, of the point with respect to datum.
    Physics · 2 months ago
  • Physics ++fluid motion?

    Distinguish between static pressure, dynamic pressure and total pressure when applied to streamline(laminar) fluid flow and given the expressions for these 3 pressures at a point in the fluid in terms of the fluid velocity v, the fluid density ρ, pressure P, and the height h, of the point with respect to datum.
    Distinguish between static pressure, dynamic pressure and total pressure when applied to streamline(laminar) fluid flow and given the expressions for these 3 pressures at a point in the fluid in terms of the fluid velocity v, the fluid density ρ, pressure P, and the height h, of the point with respect to datum.
    Physics · 2 months ago
  • Hey anyone here knows physics of fluid motion?

    Distinguish between static pressure, dynamic pressure and total pressure when applied to streamline(laminar) fluid flow and given the expressions for these 3 pressures at a point in the fluid in terms of the fluid velocity v, the fluid density ρ, pressure P, and the height h, of the point with respect to datum.
    Distinguish between static pressure, dynamic pressure and total pressure when applied to streamline(laminar) fluid flow and given the expressions for these 3 pressures at a point in the fluid in terms of the fluid velocity v, the fluid density ρ, pressure P, and the height h, of the point with respect to datum.
    Physics · 2 months ago
  • Circular Motion of Physics⚠?

    A racing-car of 1000kg moves round a banked track at a constant speed of 108km/h. Assuming the total reaction at the wheels is normal to the track, and the horizontal radius of the track is 100m, Calculate the angle of inclination of the track to the horizontal and the reaction at the wheels. Given answer: 32° 13450N
    A racing-car of 1000kg moves round a banked track at a constant speed of 108km/h. Assuming the total reaction at the wheels is normal to the track, and the horizontal radius of the track is 100m, Calculate the angle of inclination of the track to the horizontal and the reaction at the wheels. Given answer: 32° 13450N
    2 answers · Physics · 2 months ago
  • Explanation for this: ___Physics?

    Distinguish between static pressure, dynamic pressure and total pressure when applied to streamline (laminar) fluid flow and give the expressions for these 3 pressures at a point in the fluid in terms of the fluid velocity c, the fluid density p, pressure P, and the height h, of the point with respect to a datum.
    Distinguish between static pressure, dynamic pressure and total pressure when applied to streamline (laminar) fluid flow and give the expressions for these 3 pressures at a point in the fluid in terms of the fluid velocity c, the fluid density p, pressure P, and the height h, of the point with respect to a datum.
    Physics · 2 months ago
  • Physics QUESTION?

    Derive an expression for the resultant force experienced by a body of weight W and density a when it is totally immersed in a fluid of density p.
    Derive an expression for the resultant force experienced by a body of weight W and density a when it is totally immersed in a fluid of density p.
    Physics · 2 months ago
  • Tension (physics)?

    A trap-door 120cm by 120cm is kept horizontal by a string attached to the mid-point of the side opposite to that containing the hinge. The other end of the string is tied to a point 90cm vertically above the hinge. If the trap-door weight is 50N, calculate the tension in the string and the reaction at the hinge. Given Answer: 41.7N, 41.7N
    A trap-door 120cm by 120cm is kept horizontal by a string attached to the mid-point of the side opposite to that containing the hinge. The other end of the string is tied to a point 90cm vertically above the hinge. If the trap-door weight is 50N, calculate the tension in the string and the reaction at the hinge. Given Answer: 41.7N, 41.7N
    1 answer · Physics · 2 months ago
  • Physics Force in Equilibrium?

    The foot of a uniform ladder is on rough horizontal ground, and the top rests against a smooth vertical wall. The weight of the ladder is 400N, and a man weighing 800N stands on the ladder one-quarter of its length from the bottom. If the inclination of the ladder to the horizontal is 30°, find the reaction at the wall and the total force at the... show more
    The foot of a uniform ladder is on rough horizontal ground, and the top rests against a smooth vertical wall. The weight of the ladder is 400N, and a man weighing 800N stands on the ladder one-quarter of its length from the bottom. If the inclination of the ladder to the horizontal is 30°, find the reaction at the wall and the total force at the ground. Ans Provided: 690N, 1390N
    Physics · 2 months ago
  • What's up? Physics Force?

    A rectangular plate ABCD has 2 forces of 100N acting along AB and DC in opposite directions. If AB=3m, BC=5m, what is the movement of the couple or torque acting on the plate? What forces acting along BC and AD respectively are required t keep the plate equilibrium? 500Nm, 167N
    A rectangular plate ABCD has 2 forces of 100N acting along AB and DC in opposite directions. If AB=3m, BC=5m, what is the movement of the couple or torque acting on the plate? What forces acting along BC and AD respectively are required t keep the plate equilibrium? 500Nm, 167N
    Physics · 2 months ago
  • Bernoulli (physics)?

    Show that the term ρv²/2 which enters into Bernoulli equation has the same dimensions as pressure P. A fluid flows through a horizontal pipe of varying cross-section. Assuming the flow is streamline and applying the Bernoulli equation P+ρv²/2=constant, show that the pressure in the pipe is greatest where the cross-sectional area is greatest.
    Show that the term ρv²/2 which enters into Bernoulli equation has the same dimensions as pressure P. A fluid flows through a horizontal pipe of varying cross-section. Assuming the flow is streamline and applying the Bernoulli equation P+ρv²/2=constant, show that the pressure in the pipe is greatest where the cross-sectional area is greatest.
    4 answers · Physics · 2 months ago