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What is the difference between "hay" and "hubo"?

In Spanish, "hay" is the verb that states that "there is" something or someone here or there. However, "hubo" is the past tense, which means "there was".A few examples...
AL
Answered by Abraham L. • Spanish tutor
12684 Views

How do you know whether a verb takes avoir or être in the past tense?

Most verbs in French take 'avoir' in the past tense e.g. manger --> j'ai mangé. However, there are 14 verbs that take 'être' in the past tense and these can be remembered using the DR MRS VANDERTRAMP mnem...
TD
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Light with a frequency of 200nm is shone on a sodium plate with a work function of 2.28eV and electrons start escaping the surface of the plate due to the photoelectric effect. What is the maximum kinetic energy of one of these electrons in eV?

The work function of a metal is the minimum amount of energy required for electrons to start escaping the surface. This means that if we calculate the energy of each photon from the light and subtract the wo...
RS
Answered by Robert S. • Physics tutor
5165 Views

Describe how a a neurone communicates it's information with an adjacent neurone through the synapse? (3 marks)

Neurotransmitter is released from presynaptic neurone into the synaptic cleftDiffuses across the synapse Neurotransmitter binds onto postsynaptic membrane
SP
Answered by Sofia P. • Biology tutor
2959 Views

(i) What is the net agin of ATP in Glycolysis? (2 marks) (ii) Where is ATP used in Glycolysis?( 1marks)

(i) In the breakdown of glucose 4 ATP is produced, however 2 ATP are used leaving a net gain of 2 ATP.(ii) In the energy investment stage, 2 ATP molecules are used to phosphorylate glucose into fructose diph...
SP
Answered by Sofia P. • Biology tutor
3350 Views