Schoolhouse - Nova (Round 1) 🌌

A ball is thrown vertically upward with an initial velocity of 10 m/s. How long will it take for the ball to reach its maximum height? (Assume gravity = 9.8 m/s²)

• 1.02 seconds

• 0.98 seconds

• 2.04 seconds

• 0.51

Which of the following experiments confirmed the existence of the electron?

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A 2 kg object is sliding on a frictionless surface at 5 m/s. What is its kinetic energy?

• 25J

• 50J

• 10J

• 5J

Why does ice float on water even though the solid form of a compound is typically denser than the liquid form?

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Which fundamental force is responsible for holding the nucleus of an atom together?

• Electromagnetic force

• Gravitational force

• Strong nuclear force

• Weak nuclear force

What is the SI unit of electric current?

• Volt

• Ohm

• Ampere

• Coulomb

Which scientist formulated the theory of general relativity?

• Isaac Newton

• Niels Bohr

• Albert Einstein

• Max Planck

Two resistors of 4Ω and 6Ω are connected in parallel. What is the equivalent resistance?

• 2.4Ω

• 10Ω

• 2Ω

• 5Ω

A spring with spring constant 200 N/m is compressed by 0.1 m. How much energy is stored in the spring?

• 1 J

• 2 J

• 20 J

• 0.5 J

Explain how thermal expansion affects the design of bridges.

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