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Zubydon
Questions (22)
A light wave travels from air into a medium of refractive index is 1.54,if the wave lenght of the light in air is 5.49×10^-7.
1 answer
54 views
A light wave travels from air into a medium of refractive index is 1.54,if the wave lenght of the light in air is 5.40×10^-7.
1 answer
66 views
8. Water of mass 1.5 kg is heated from 30 degrees Celsius to 80 degrees Celsius using an electric kettle which is rated 5A, 239
1 answer
69 views
1. 500 g of aluminium block at a temperature of 650 degrees Celsius is dropped into a copper calorimeter of mass 100g containing
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89 views
Does entropy increase or decrease in dissolution of sugar
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61 views
Does entropy increase or decrease in melting point
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41 views
Calculate the heat of combustion of a compound z , if 0.06 of heat on burning raise the temperature of 400gm of water by 10k
1 answer
70 views
Calculate the heat of combustion of a compound, if 0.06mole of heat on burning raise the temperature of 400gm of water by 10k
1 answer
73 views
Calculate the heat of combustion of a compound if o.06 mole of burning raise the temperature of 40.0gm of water by 10k ( specfic
1 answer
86 views
A converging lens of focal length 15cm is used to obtain a real image magnified 1/2 times, calculate the distance of the image
1 answer
94 views
A converging lens of focal length 15cm is used to obtain a real image magnified one and half times, calculate the distance of
1 answer
81 views
A converging lens of focal length 5cm forms a visual image which is 10cm from the lens, how far from the lens is the object
1 answer
102 views
A converging lens of focal length 5cm forms a visual image which is 10cm from the lens, how far from the lens is the object
1 answer
99 views
A real image of an object formed by a converging lens of focal lenght 15cm is 3 times the size of the object. What is the
1 answer
102 views
An object of height 10cm placed at a distance of 15 from the pole produced an image is twice the height of the object. Calculate
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72 views
What is the volume of oxygen required to burn completely 45cm3 of methane.
1 answer
99 views
2. What is the volume of oxygen required to burn completely 50cm3 of ethyne(C2H2).
3. In the reaction between sodium chloride and
1 answer
89 views
11. The image of an object is located 6cm behind a convex mirror. If it's magnification is 0.6, calculate the focal length of
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149 views
1. A small pin is placed 10 cm in front of a concave mirror of focal length 15 cm. calculate the image distance and the
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91 views
An object 3m to the west and 1 m to the north of the origin. It then moves to the new position 5m to the east and 2m to the
1 answer
79 views
Two 5.0 kg spherical balls are placed so that their centres are 50.0 cm apart. what is the magnitude of the gravitational force
1 answer
59 views
. A mass of 10 kg moves with a velocity of 4m/s. find is kinetic energy.
1 answer
58 views
