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The phrase "hemmed in" is a phrasal verb. To hem someone in means to prevent someone from moving or doing what they want to do. So the sentence would read: The editor was not happy that the Nigerian press was hemmed in. This means that the Nigerian press is not allowed to do what it wants to do.

Have is the root verb and is used alongside the pronoun I / You / We / Ye and They and plural noun. Generally, have is a present tense word. Has is used alongside the PRONOUNS He / She / It and Who and SINGULAR NOUNS. Three-quarters of the hostel is a singular noun because it refers to a part of one object. Three-quarters of the students is a plural noun because it refers to more than one student. Hence the sentence would read; Three-quarters of the hostel has been painted and three-quarters of the students have moved in.

The sentence should read: "A wide range of options was made available to the political parties during the recently concluded elections." This maintains subject-verb agreement because "was" is the singular past tense form of "to be," which matches the singular subject "a wide range of options."

According to Faraday's Law, the mass of the substance deposited is directly proportional to the time for which the current flows, assuming a constant current. Therefore, the graph should show a linear increase in mass over time, which corresponds to option A

(p - 760)/(0 - 760) = (h - 0)/(80 - 0) ∴ (p - 760)/-760 = (20 - 0)/80 80(p-760) = -760(20-0) ∴80p - 60800 = -15200 80p = 60800 - 15200 80p = 45600 ∴ p = 45600/80 p = 570mmHg

At the height of 10m, its total energy is potential, given by P.E. = mgh = 1 x 10 x 10 = 100J. But as the stone descends, its potential energy decreases, while its kinetic energy increases. Half way during the fall, (h = 5m), its P.E. = 50J, and consequently, its K.E. should be 50J, such that from the principle of conservation of energy, the total energy of the stone at any instant should be conserved.

heat is transferred from the water to the ice/glass through direct contact(conduction) additionally, there is some convective heat transfer within the water as warmer water rises and cooler water sinks.

When ever a ray of light is incident on a plane mirror at an angle of incidence l, if the mirror is then rotated through an angle θ, then the reflected ray is rotated through an angle twice θ So if θ = 35°, then the reflected ray is rotated through 2 x 10o = 20°

The extra lens in the terrestrial telescope mounted at the middle between the objective lens and the eye piece is to re-invert the image so that it is upright.

Thus if r = 1m f = 1/2 = 0.5m ∴ if U = - 4m (object behind mirror) f = 0.5m \(\frac{1}{u}\) + \(\frac{1}{v}\) = \(\frac{1}{f}\) -\(\frac{1}{4}\) + \(\frac{1}{v}\) = \(\frac{1}{0.5}\) \(\frac{1}{v}\) = 2 + \(\frac{1}{4}\) \(\frac{1}{v}\) = \(\frac{1+ 8}{4}\) \(\frac{1}{v}\) = \(\frac{9}{4}\) v = \(\frac{4}{9}\)

To find the ratio of the final volume to the initial volume of a gas when both pressure and temperature change, we can use the Ideal Gas Law, which states that \(\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}\) P\(_1\) = 300N/m\(^2\) V\(_1\) = ?, V\(_2\) = ?, T\(_1\) = 127^\circC =127+273 = 400K, T\(_2\) = −73^\circC = −73 + 273 = 200K P\(_2\) = 120N/m\(^2\) Using the Ideal Gas Law, we can rearrange it to find the ratio of volumes: = \(\frac{V_2}{V_1} = \frac{P_1T_2}{P_2T_1}\) = \(\frac{V_2}{V_1} = \frac{300 \times 200}{120 \times 400}\) = \(\frac{5}{4}\) Therefore, V\(_2\) : V\(_1\) = 5 : 4.

If the bob is fully immersed in the water, then the volume of water displaced will be equal to the volume of the bob = 4/3πr3, where r is the radius of the bob. This volume of water in the cylinder = πr2l, where r = radius of the cylinder, and l = level of water rose in the cylinder. Therefore, π x r2 x l = 4/3 x π x 33 Then r2 = 36 r = √36 r = 6cm

The resultant of two forces acting on an object is maximum when the angle between them is zero, during which the two forces are parallel and pointing in the same direction

In real-world machines, due to factors such as friction, deformation, and other losses, the mechanical advantage is always less than the velocity ratio: MA < VR This means that the work output (useful work done) is always less than the work input (energy supplied), leading to efficiency being less than 100%.

Velocity: Vector quantity (has both magnitude and direction). Displacement: Vector quantity (change in position). Reaction: Typically refers to a reaction force, which is a vector quantity.(OPTION A)