An ambulance siren emits a sound of frequency 1200 Hz. The speed of sound in air is 330 m s –1 .

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A negatively charged particle in a uniform gravitational field ispositioned mid-way between two char

The gravitational field strength at the surface of a planet of radiusRis .A satellite is moving

The escape speed from the surface of earth isv .The radius of earth isR. A satellite of mass m is

The radius of the Earth is R. A satellite is launched to a heighth =above the Earth’s surface.

A space probe movesin a circular orbit around Earth.The kineticenergy of the probe is .The probe w

The graph showsthe variation of torque with time acting on a rotatingobject.What isthe

An object with a moment of inertia of 12 kg m isrotating about its axisof rotation with an angularsp

Photons of discrete energy are emitted during gamma decay. This is evidence forAatomic ene

Do we have gravity in space? | Examples of Pseudo Force

Some energy levels for a hydrogen atom are shown. What is the wavelength emitted in transition

A planet has an albedo of 0.30. A simplified energy balance for the planet is shown. What is the int

Wind generator X has a maximum power output PX for a particular wind speed. For the samewind speed,

An object of mass M is accelerated vertically upwards by a motor at a constant acceleration.The

What is correct about the nature and range of the strong interaction between nuclear particles?A.

A proton collides with an electron. What are the possible products of the collision?A. Two neutro

Identify the conservation law violated in the proposed reaction.

A pure sample of iodine-131 decays into xenon with a half-life of 8 days.What is number of

What gives the total change in nuclear mass and the change in nuclear binding energy as a res

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Three capacitors are arranged as shown. What is the total capacitance of the arrangement?

A battery is used to charge a capacitor fully through a resistor of resistance R. The energy supplie

A parallel-plate capacitor is connected to a battery. What happens when a sheet of dielectric mat

May 2023 | Paper 1 | HL | TZ1